Panduan ini memberikan petunjuk untuk beralih dari data Landsat Collection 1 ke Collection 2. Collection 2 telah tersedia sepenuhnya di Earth Engine sejak 2022 dan tidak ada data Collection 1 yang diproduksi oleh USGS sejak 31 Desember 2021. Landsat Collection 1 tidak digunakan lagi dan semua pengguna dianjurkan untuk bermigrasi ke Collection 2 sesegera mungkin.
Setiap Kumpulan Data Landsat mewakili versi arsip gambar yang diproses dengan metode dan rutinitas yang konsisten. Seiring peningkatan kualitas sistem dan algoritma pemrosesan, koleksi baru akan dibuat. Pada tahun 2020, USGS mulai memproses ulang arsip ke Collection 2. Lihat artikel "The 50-year Landsat collection 2 archive" di Remote Sensing of Environment untuk mempelajari alasan di balik model pemrosesan koleksi serta konten dan kemajuan yang disediakan oleh Koleksi 2.
Bagian berikut menjelaskan perubahan yang diperlukan untuk bermigrasi dari Collection 1 ke Collection 2 untuk setiap produk data Landsat, termasuk ID gambar dan koleksi, nama band, band baru, penskalaan nilai band, dan nilai bitmask. Tab konten dalam setiap bagian memberikan detail untuk sensor tertentu.
Reflektansi permukaan
OLI
ID Aset
Ganti C01 dengan C02 dan SR dengan L2 di ID gambar dan koleksi.
Misalnya, Landsat 8 OLI Tingkat 1
(Landsat 9 OLI-2 tidak disertakan dalam Koleksi 1):
| Koleksi 1 | Koleksi 2 |
|---|---|
| LANDSAT/LC08/C01/T1_SR | LANDSAT/LC08/C02/T1_L2 |
Nama band
Perluas untuk melihat perubahan nama band dan penambahan band baru
| Deskripsi | Nama Koleksi 1 | Nama Koleksi 2 |
|---|---|---|
| Ultra biru | B1 | SR_B1 |
| Biru | B2 | SR_B2 |
| Hijau | B3 | SR_B3 |
| Merah | B4 | SR_B4 |
| Inframerah dekat | B5 | SR_B5 |
| Inframerah gelombang pendek 1 | B6 | SR_B6 |
| Inframerah gelombang pendek 2 | B7 | SR_B7 |
| Suhu kecerahan 1 | B10 | |
| Suhu kecerahan 2 | B11 | |
| Atribut aerosol | sr_aerosol | SR_QA_AEROSOL |
| Suhu permukaan | ST_B10 | |
| Transmittansi atmosfer | ST_ATRAN | |
| Jarak piksel ke cloud | ST_CDIST | |
| Pancaran yang mengarah ke bawah | ST_DRAD | |
| Emisivitas | ST_EMIS | |
| Simpangan baku emisivitas | ST_EMSD | |
| Ketidakpastian suhu permukaan | ST_QA | |
| Radiasi termal | ST_TRAD | |
| Radiasi yang muncul | ST_URAD | |
| Atribut kualitas piksel (CFMask) | pixel_qa | QA_PIXEL |
| Pengujian kualitas saturasi radiometrik | radsat_qa | QA_RADSAT |
Perbarui kode yang memilih band yang namanya telah berubah, misalnya, band inframerah dekat:
| Koleksi 1 | Koleksi 2 |
|---|---|
image.select('B5') |
image.select('SR_B5') |
Penskalaan nilai
Band reflektansi memiliki faktor penskalaan baru. Koleksi 1 menggunakan faktor skala 0.0001. Koleksi 2 menggunakan faktor skala 2.75e-05 dan offset -0.2.
Band termal juga memiliki faktor skala dan offset baru. Blok
kode berikut menentukan fungsi untuk menerapkan faktor penskalaan suhu dan pantulan permukaan Koleksi 2 serta memetakannya ke seluruh koleksi gambar.
Editor Kode (JavaScript)
var applyScaleFactors = function(image) { var opticalBands = image.select('SR_B.').multiply(0.0000275).add(-0.2); var thermalBand = image.select('ST_B10').multiply(0.00341802).add(149.0); return image.addBands(opticalBands, null, true) .addBands(thermalBand, null, true); } var srColScaled = srCol.map(applyScaleFactors)
Colab (Python)
def apply_scale_factors(image): optical_bands = image.select('SR_B.').multiply(0.0000275).add(-0.2) thermal_band = image.select('ST_B6').multiply(0.00341802).add(149.0) return image.addBands(optical_bands, None, True).addBands( thermal_band, None, True ) sr_col_scaled = sr_col.map(apply_scale_factors)
Penyamaran QA
Kode bit telah berubah untuk bitmask QA (CFMASK). Lihat bagian "Bitmask untuk QA_PIXEL" (Koleksi 2) dan "Bitmask untuk pixel_qa" (Koleksi 1) di entri katalog untuk melihat kode.
Ekspresi berikut membuat masker awan dan bayangan untuk gambar tertentu menggunakan kode bitmask QA Kumpulan Data 2.
Editor Kode (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11111', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11111', 2)).eq(0)
Saturasi radiometrik
Kode bit telah berubah untuk bitmask saturasi radiometrik. Lihat bagian "Bitmask for QA_RADSAT" (Collection 2) dan "Bitmask for radsat_qa" (Collection 1) dalam entri katalog untuk kode.
Properti gambar
Dalam transisi dari Koleksi 1 ke Koleksi 2, beberapa properti gambar ditambahkan dan beberapa dihapus. Properti untuk geometri surya diubah. Lihat tabel perbandingan properti berikut untuk menentukan apakah Anda perlu mengubah kode untuk mengakomodasi properti yang hilang, ditambahkan, atau diubah (misalnya, dalam pemfilteran atau pemrosesan). Lihat tab Properti Gambar di halaman katalog produk untuk deskripsi properti Koleksi 2.
Luaskan untuk membandingkan daftar properti
| Koleksi 1 | Koleksi 2 |
|---|---|
| ALGORITHM_SOURCE_SURFACE_REFLECTANCE | |
| ALGORITHM_SOURCE_SURFACE_TEMPERATURE | |
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | |
| COLLECTION_NUMBER | |
| DATA_SOURCE_AIR_TEMPERATURE | |
| DATA_SOURCE_ELEVATION | |
| DATA_SOURCE_OZONE | |
| DATA_SOURCE_PRESSURE | |
| DATA_SOURCE_REANALYSIS | |
| DATA_SOURCE_TIRS_STRAY_LIGHT_CORRECTION | |
| DATA_SOURCE_WATER_VAPOR | |
| DATE_ACQUIRED | |
| DATE_PRODUCT_GENERATED | |
| DATUM | |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELLIPSOID | |
| ESPA_VERSION | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | |
| GRID_CELL_SIZE_REFLECTIVE | |
| GRID_CELL_SIZE_THERMAL | |
| GROUND_CONTROL_POINTS_MODEL | |
| GROUND_CONTROL_POINTS_VERIFY | |
| GROUND_CONTROL_POINTS_VERSION | |
| IMAGE_QUALITY_OLI | IMAGE_QUALITY_OLI |
| IMAGE_QUALITY_TIRS | IMAGE_QUALITY_TIRS |
| L1_DATE_PRODUCT_GENERATED | |
| L1_LANDSAT_PRODUCT_ID | |
| L1_PROCESSING_LEVEL | |
| L1_PROCESSING_SOFTWARE_VERSION | |
| L1_REQUEST_ID | |
| LANDSAT_ID | |
| LANDSAT_PRODUCT_ID | |
| LANDSAT_SCENE_ID | |
| LEVEL1_PRODUCTION_DATE | |
| MAP_PROJECTION | |
| NADIR_OFFNADIR | |
| ORIENTASI | |
| PIXEL_QA_VERSION | |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | |
| REFLECTANCE_ADD_BAND_1 | |
| REFLECTANCE_ADD_BAND_2 | |
| REFLECTANCE_ADD_BAND_3 | |
| REFLECTANCE_ADD_BAND_4 | |
| REFLECTANCE_ADD_BAND_5 | |
| REFLECTANCE_ADD_BAND_6 | |
| REFLECTANCE_ADD_BAND_7 | |
| REFLECTANCE_MULT_BAND_1 | |
| REFLECTANCE_MULT_BAND_2 | |
| REFLECTANCE_MULT_BAND_3 | |
| REFLECTANCE_MULT_BAND_4 | |
| REFLECTANCE_MULT_BAND_5 | |
| REFLECTANCE_MULT_BAND_6 | |
| REFLECTANCE_MULT_BAND_7 | |
| REFLECTIVE_LINES | |
| REFLECTIVE_SAMPLES | |
| REQUEST_ID | |
| ROLL_ANGLE | |
| SATELIT | |
| SATURATION_BAND_1 | |
| SATURATION_BAND_2 | |
| SATURATION_BAND_3 | |
| SATURATION_BAND_4 | |
| SATURATION_BAND_5 | |
| SATURATION_BAND_6 | |
| SATURATION_BAND_7 | |
| SATURATION_BAND_8 | |
| SATURATION_BAND_9 | |
| SCENE_CENTER_TIME | |
| SENSING_TIME | |
| SENSOR_ID | |
| SPACECRAFT_ID | |
| STATION_ID | |
| SOLAR_AZIMUTH_ANGLE | SUN_AZIMUTH |
| SOLAR_ZENITH_ANGLE | SUN_ELEVATION (Collection 2 menggunakan elevasi, bukan sudut zenit. Untuk menghitung sudut zenit, gunakan 90 - elevation.) |
| SR_APP_VERSION | |
| TARGET_WRS_PATH | |
| TARGET_WRS_ROW | |
| TEMPERATURE_ADD_BAND_ST_B10 | |
| TEMPERATURE_MAXIMUM_BAND_ST_B10 | |
| TEMPERATURE_MINIMUM_BAND_ST_B10 | |
| TEMPERATURE_MULT_BAND_ST_B10 | |
| THERMAL_LINES | |
| THERMAL_SAMPLES | |
| TIRS_SSM_MODEL | |
| TIRS_SSM_POSITION_STATUS | |
| TRUNCATION_OLI | |
| UTM_ZONE | |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE |
ETM+
ID Aset
Ganti C01 dengan C02 dan SR dengan L2 di ID gambar dan koleksi.
Misalnya, Landsat 7 ETM+ Tingkat 1:
| Koleksi 1 | Koleksi 2 |
|---|---|
| LANDSAT/LE07/C01/T1_SR | LANDSAT/LE07/C02/T1_L2 |
Nama band
Perhatikan perubahan nama band dan penambahan band baru.
Perluas untuk melihat perubahan nama band dan penambahan band baru
| Deskripsi | Nama Koleksi 1 | Nama Koleksi 2 |
|---|---|---|
| Biru | B1 | SR_B1 |
| Hijau | B2 | SR_B2 |
| Merah | B3 | SR_B3 |
| Inframerah dekat | B4 | SR_B4 |
| Inframerah gelombang pendek 1 | B5 | SR_B5 |
| Suhu kecerahan TOA | B6 | |
| Inframerah gelombang pendek 2 | B7 | SR_B7 |
| Opasitas atmosfer | sr_atmos_opacity | SR_ATMOS_OPACITY |
| Penilaian kualitas cloud | sr_cloud_qa | SR_CLOUD_QA |
| Suhu permukaan | ST_B6 | |
| Transmittansi atmosfer | ST_ATRAN | |
| Jarak piksel ke cloud | ST_CDIST | |
| Pancaran yang mengarah ke bawah | ST_DRAD | |
| Emisivitas | ST_EMIS | |
| Simpangan baku emisivitas | ST_EMSD | |
| Ketidakpastian suhu permukaan | ST_QA | |
| Radiasi termal | ST_TRAD | |
| Radiasi yang muncul | ST_URAD | |
| Atribut kualitas piksel (CFMask) | pixel_qa | QA_PIXEL |
| Pengujian kualitas saturasi radiometrik | radsat_qa | QA_RADSAT |
Perbarui kode yang memilih band yang namanya telah berubah, misalnya, band inframerah dekat:
| Koleksi 1 | Koleksi 2 |
|---|---|
image.select('B4') |
image.select('SR_B4') |
Penskalaan nilai
Band reflektansi memiliki faktor penskalaan baru. Koleksi 1 menggunakan faktor skala 0.0001. Koleksi 2 menggunakan faktor skala 2.75e-05 dan offset -0.2.
Band termal juga memiliki faktor skala dan offset baru. Blok
kode berikut menentukan fungsi untuk menerapkan faktor penskalaan suhu dan pantulan permukaan Koleksi 2 serta memetakannya ke seluruh koleksi gambar.
Editor Kode (JavaScript)
var applyScaleFactors = function(image) { var opticalBands = image.select('SR_B.').multiply(0.0000275).add(-0.2); var thermalBand = image.select('ST_B6').multiply(0.00341802).add(149.0); return image.addBands(opticalBands, null, true) .addBands(thermalBand, null, true); } var srColScaled = srCol.map(applyScaleFactors)
Colab (Python)
def apply_scale_factors(image): optical_bands = image.select('SR_B.').multiply(0.0000275).add(-0.2) thermal_band = image.select('ST_B6').multiply(0.00341802).add(149.0) return image.addBands(optical_bands, None, True).addBands( thermal_band, None, True ) sr_col_scaled = sr_col.map(apply_scale_factors)
Penyamaran QA
Kode bit telah berubah untuk bitmask QA (CFMASK). Lihat bagian "Bitmask untuk QA_PIXEL" (Koleksi 2) dan "Bitmask untuk pixel_qa" (Koleksi 1) di entri katalog untuk melihat kode.
Ekspresi berikut membuat masker awan dan bayangan untuk gambar tertentu menggunakan kode bitmask QA Kumpulan Data 2.
Editor Kode (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11111', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11111', 2)).eq(0)
Saturasi radiometrik
Kode bit telah berubah untuk bitmask saturasi radiometrik. Lihat bagian "Bitmask for QA_RADSAT" (Collection 2) dan "Bitmask for radsat_qa" (Collection 1) dalam entri katalog untuk kode.
Properti gambar
Dalam transisi dari Koleksi 1 ke Koleksi 2, beberapa properti gambar ditambahkan dan beberapa dihapus. Properti untuk geometri surya diubah. Lihat tabel perbandingan properti berikut untuk menentukan apakah Anda perlu mengubah kode untuk mengakomodasi properti yang hilang, ditambahkan, atau diubah (misalnya, dalam pemfilteran atau pemrosesan). Lihat tab Properti Gambar di halaman katalog produk untuk deskripsi properti Koleksi 2.
Luaskan untuk membandingkan daftar properti
| Koleksi 1 | Koleksi 2 |
|---|---|
| ALGORITHM_SOURCE_SURFACE_REFLECTANCE | |
| ALGORITHM_SOURCE_SURFACE_TEMPERATURE | |
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | |
| COLLECTION_NUMBER | |
| CORRECTION_BIAS_BAND_1 | |
| CORRECTION_BIAS_BAND_2 | |
| CORRECTION_BIAS_BAND_3 | |
| CORRECTION_BIAS_BAND_4 | |
| CORRECTION_BIAS_BAND_5 | |
| CORRECTION_BIAS_BAND_6_VCID_1 | |
| CORRECTION_BIAS_BAND_6_VCID_2 | |
| CORRECTION_BIAS_BAND_7 | |
| CORRECTION_BIAS_BAND_8 | |
| CORRECTION_GAIN_BAND_1 | |
| CORRECTION_GAIN_BAND_2 | |
| CORRECTION_GAIN_BAND_3 | |
| CORRECTION_GAIN_BAND_4 | |
| CORRECTION_GAIN_BAND_5 | |
| CORRECTION_GAIN_BAND_6_VCID_1 | |
| CORRECTION_GAIN_BAND_6_VCID_2 | |
| CORRECTION_GAIN_BAND_7 | |
| CORRECTION_GAIN_BAND_8 | |
| DATA_SOURCE_AIR_TEMPERATURE | |
| DATA_SOURCE_ELEVATION | |
| DATA_SOURCE_OZONE | |
| DATA_SOURCE_PRESSURE | |
| DATA_SOURCE_REANALYSIS | |
| DATA_SOURCE_WATER_VAPOR | |
| DATE_ACQUIRED | |
| DATE_PRODUCT_GENERATED | |
| DATUM | |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELLIPSOID | |
| EPHEMERIS_TYPE | |
| ESPA_VERSION | |
| GAIN_BAND_1 | |
| GAIN_BAND_2 | |
| GAIN_BAND_3 | |
| GAIN_BAND_4 | |
| GAIN_BAND_5 | |
| GAIN_BAND_6_VCID_1 | |
| GAIN_BAND_6_VCID_2 | |
| GAIN_BAND_7 | |
| GAIN_BAND_8 | |
| GAIN_CHANGE_BAND_1 | |
| GAIN_CHANGE_BAND_2 | |
| GAIN_CHANGE_BAND_3 | |
| GAIN_CHANGE_BAND_4 | |
| GAIN_CHANGE_BAND_5 | |
| GAIN_CHANGE_BAND_6_VCID_1 | |
| GAIN_CHANGE_BAND_6_VCID_2 | |
| GAIN_CHANGE_BAND_7 | |
| GAIN_CHANGE_BAND_8 | |
| GAIN_CHANGE_SCAN_BAND_1 | |
| GAIN_CHANGE_SCAN_BAND_2 | |
| GAIN_CHANGE_SCAN_BAND_3 | |
| GAIN_CHANGE_SCAN_BAND_4 | |
| GAIN_CHANGE_SCAN_BAND_5 | |
| GAIN_CHANGE_SCAN_BAND_6_VCID_1 | |
| GAIN_CHANGE_SCAN_BAND_6_VCID_2 | |
| GAIN_CHANGE_SCAN_BAND_7 | |
| GAIN_CHANGE_SCAN_BAND_8 | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GRID_CELL_SIZE_REFLECTIVE | |
| GRID_CELL_SIZE_THERMAL | |
| GROUND_CONTROL_POINTS_MODEL | |
| GROUND_CONTROL_POINTS_VERSION | |
| IMAGE_QUALITY | IMAGE_QUALITY |
| L1_DATE_PRODUCT_GENERATED | |
| L1_LANDSAT_PRODUCT_ID | |
| L1_PROCESSING_LEVEL | |
| L1_PROCESSING_SOFTWARE_VERSION | |
| L1_REQUEST_ID | |
| LANDSAT_ID | |
| LANDSAT_PRODUCT_ID | |
| LANDSAT_SCENE_ID | |
| LEVEL1_PRODUCTION_DATE | |
| MAP_PROJECTION | |
| ORIENTASI | |
| PIXEL_QA_VERSION | |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | |
| REFLECTANCE_ADD_BAND_1 | |
| REFLECTANCE_ADD_BAND_2 | |
| REFLECTANCE_ADD_BAND_3 | |
| REFLECTANCE_ADD_BAND_4 | |
| REFLECTANCE_ADD_BAND_5 | |
| REFLECTANCE_ADD_BAND_7 | |
| REFLECTANCE_MULT_BAND_1 | |
| REFLECTANCE_MULT_BAND_2 | |
| REFLECTANCE_MULT_BAND_3 | |
| REFLECTANCE_MULT_BAND_4 | |
| REFLECTANCE_MULT_BAND_5 | |
| REFLECTANCE_MULT_BAND_7 | |
| REFLECTIVE_LINES | |
| REFLECTIVE_SAMPLES | |
| REQUEST_ID | |
| SATELIT | |
| SATURATION_BAND_1 | |
| SATURATION_BAND_2 | |
| SATURATION_BAND_3 | |
| SATURATION_BAND_4 | |
| SATURATION_BAND_5 | |
| SATURATION_BAND_6_VCID_1 | |
| SATURATION_BAND_6_VCID_2 | |
| SATURATION_BAND_7 | |
| SATURATION_BAND_8 | |
| SCENE_CENTER_TIME | |
| SENSING_TIME | |
| SENSOR_ANOMALIES | |
| SENSOR_ID | |
| SENSOR_MODE | |
| SENSOR_MODE_SLC | |
| SPACECRAFT_ID | |
| STATION_ID | |
| SOLAR_AZIMUTH_ANGLE | SUN_AZIMUTH |
| SOLAR_ZENITH_ANGLE | SUN_ELEVATION (Collection 2 menggunakan elevasi, bukan sudut zenit. Untuk menghitung sudut zenit, gunakan 90 - elevation.) |
| SR_APP_VERSION | |
| TEMPERATURE_ADD_BAND_ST_B6 | |
| TEMPERATURE_MAXIMUM_BAND_ST_B6 | |
| TEMPERATURE_MINIMUM_BAND_ST_B6 | |
| TEMPERATURE_MULT_BAND_ST_B6 | |
| THERMAL_LINES | |
| THERMAL_SAMPLES | |
| UTM_ZONE | |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE |
TM
ID Aset
Ganti C01 dengan C02 dan SR dengan L2 di ID gambar dan koleksi.
Misalnya, Landsat 5 TM Tingkat 1:
| Koleksi 1 | Koleksi 2 |
|---|---|
| LANDSAT/LT05/C01/T1_SR | LANDSAT/LT05/C02/T1_L2 |
Nama band
Perhatikan perubahan nama band dan penambahan band baru.
Perluas untuk melihat perubahan nama band dan penambahan band baru
| Deskripsi | Nama Koleksi 1 | Nama Koleksi 2 |
|---|---|---|
| Biru | B1 | SR_B1 |
| Hijau | B2 | SR_B2 |
| Merah | B3 | SR_B3 |
| Inframerah dekat | B4 | SR_B4 |
| Inframerah gelombang pendek 1 | B5 | SR_B5 |
| Suhu kecerahan TOA | B6 | |
| Inframerah gelombang pendek 2 | B7 | SR_B7 |
| Opasitas atmosfer | sr_atmos_opacity | SR_ATMOS_OPACITY |
| Penilaian kualitas cloud | sr_cloud_qa | SR_CLOUD_QA |
| Suhu permukaan | ST_B6 | |
| Transmittansi atmosfer | ST_ATRAN | |
| Jarak piksel ke cloud | ST_CDIST | |
| Pancaran yang mengarah ke bawah | ST_DRAD | |
| Emisivitas | ST_EMIS | |
| Simpangan baku emisivitas | ST_EMSD | |
| Ketidakpastian suhu permukaan | ST_QA | |
| Radiasi termal | ST_TRAD | |
| Radiasi yang muncul | ST_URAD | |
| Atribut kualitas piksel (CFMask) | pixel_qa | QA_PIXEL |
| Pengujian kualitas saturasi radiometrik | radsat_qa | QA_RADSAT |
Perbarui kode yang memilih band yang namanya telah berubah, misalnya, band inframerah dekat:
| Koleksi 1 | Koleksi 2 |
|---|---|
image.select('B4') |
image.select('SR_B4') |
Penskalaan nilai
Band reflektansi memiliki faktor penskalaan baru. Koleksi 1 menggunakan faktor skala 0.0001. Koleksi 2 menggunakan faktor skala 2.75e-05 dan offset -0.2.
Band termal juga memiliki faktor skala dan offset baru. Blok
kode berikut menentukan fungsi untuk menerapkan faktor penskalaan suhu dan pantulan permukaan Koleksi 2 serta memetakannya ke seluruh koleksi gambar.
Editor Kode (JavaScript)
var applyScaleFactors = function(image) { var opticalBands = image.select('SR_B.').multiply(0.0000275).add(-0.2); var thermalBand = image.select('ST_B6').multiply(0.00341802).add(149.0); return image.addBands(opticalBands, null, true) .addBands(thermalBand, null, true); } var srColScaled = srCol.map(applyScaleFactors)
Colab (Python)
def apply_scale_factors(image): optical_bands = image.select('SR_B.').multiply(0.0000275).add(-0.2) thermal_band = image.select('ST_B6').multiply(0.00341802).add(149.0) return image.addBands(optical_bands, None, True).addBands( thermal_band, None, True ) sr_col_scaled = sr_col.map(apply_scale_factors)
Penyamaran QA
Kode bit telah berubah untuk bitmask QA (CFMASK). Lihat bagian "Bitmask untuk QA_PIXEL" (Koleksi 2) dan "Bitmask untuk pixel_qa" (Koleksi 1) dalam entri katalog untuk kode (misalnya, TM 5).
Ekspresi berikut membuat masker awan dan bayangan untuk gambar tertentu menggunakan kode bitmask QA Kumpulan Data 2.
Editor Kode (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11111', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11111', 2)).eq(0)
Saturasi radiometrik
Kode bit telah berubah untuk bitmask saturasi radiometrik. Lihat bagian "Bitmask untuk QA_RADSAT" (Collection 2) dan "Bitmask untuk radsat_qa" (Collection 1) dalam entri katalog untuk kode (misalnya, TM 5).
Properti gambar
Dalam transisi dari Koleksi 1 ke Koleksi 2, beberapa properti gambar ditambahkan dan beberapa dihapus. Properti untuk geometri surya diubah. Lihat tabel perbandingan properti berikut untuk menentukan apakah Anda perlu mengubah kode untuk mengakomodasi properti yang hilang, ditambahkan, atau diubah (misalnya, dalam pemfilteran atau pemrosesan). Lihat tab Properti Gambar di halaman katalog produk untuk deskripsi properti Koleksi 2 (misalnya, TM 5).
Luaskan untuk membandingkan daftar properti
| Koleksi 1 | Koleksi 2 |
|---|---|
| ALGORITHM_SOURCE_SURFACE_REFLECTANCE | |
| ALGORITHM_SOURCE_SURFACE_TEMPERATURE | |
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | |
| COLLECTION_NUMBER | |
| CORRECTION_BIAS_BAND_1 | |
| CORRECTION_BIAS_BAND_2 | |
| CORRECTION_BIAS_BAND_3 | |
| CORRECTION_BIAS_BAND_4 | |
| CORRECTION_BIAS_BAND_5 | |
| CORRECTION_BIAS_BAND_6 | |
| CORRECTION_BIAS_BAND_7 | |
| CORRECTION_GAIN_BAND_1 | |
| CORRECTION_GAIN_BAND_2 | |
| CORRECTION_GAIN_BAND_3 | |
| CORRECTION_GAIN_BAND_4 | |
| CORRECTION_GAIN_BAND_5 | |
| CORRECTION_GAIN_BAND_6 | |
| CORRECTION_GAIN_BAND_7 | |
| DATA_SOURCE_AIR_TEMPERATURE | |
| DATA_SOURCE_ELEVATION | |
| DATA_SOURCE_OZONE | |
| DATA_SOURCE_PRESSURE | |
| DATA_SOURCE_REANALYSIS | |
| DATA_SOURCE_WATER_VAPOR | |
| DATA_TYPE_L0RP | |
| DATE_ACQUIRED | |
| DATE_PRODUCT_GENERATED | |
| DATUM | |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELLIPSOID | |
| EPHEMERIS_TYPE | |
| ESPA_VERSION | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | |
| GEOMETRIC_RMSE_VERIFY_QUAD_LL | |
| GEOMETRIC_RMSE_VERIFY_QUAD_LR | |
| GEOMETRIC_RMSE_VERIFY_QUAD_UL | |
| GEOMETRIC_RMSE_VERIFY_QUAD_UR | |
| GRID_CELL_SIZE_REFLECTIVE | |
| GRID_CELL_SIZE_THERMAL | |
| GROUND_CONTROL_POINTS_MODEL | |
| GROUND_CONTROL_POINTS_VERIFY | |
| GROUND_CONTROL_POINTS_VERSION | |
| IMAGE_QUALITY | IMAGE_QUALITY |
| L1_DATE_PRODUCT_GENERATED | |
| L1_LANDSAT_PRODUCT_ID | |
| L1_PROCESSING_LEVEL | |
| L1_PROCESSING_SOFTWARE_VERSION | |
| L1_REQUEST_ID | |
| LANDSAT_ID | |
| LANDSAT_PRODUCT_ID | |
| LANDSAT_SCENE_ID | |
| LEVEL1_PRODUCTION_DATE | |
| MAP_PROJECTION | |
| ORIENTASI | |
| PIXEL_QA_VERSION | |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | |
| REFLECTANCE_ADD_BAND_1 | |
| REFLECTANCE_ADD_BAND_2 | |
| REFLECTANCE_ADD_BAND_3 | |
| REFLECTANCE_ADD_BAND_4 | |
| REFLECTANCE_ADD_BAND_5 | |
| REFLECTANCE_ADD_BAND_7 | |
| REFLECTANCE_MULT_BAND_1 | |
| REFLECTANCE_MULT_BAND_2 | |
| REFLECTANCE_MULT_BAND_3 | |
| REFLECTANCE_MULT_BAND_4 | |
| REFLECTANCE_MULT_BAND_5 | |
| REFLECTANCE_MULT_BAND_7 | |
| REFLECTIVE_LINES | |
| REFLECTIVE_SAMPLES | |
| REQUEST_ID | |
| SATELIT | |
| SATURATION_BAND_1 | |
| SATURATION_BAND_2 | |
| SATURATION_BAND_3 | |
| SATURATION_BAND_4 | |
| SATURATION_BAND_5 | |
| SATURATION_BAND_6 | |
| SATURATION_BAND_7 | |
| SCENE_CENTER_TIME | |
| SENSING_TIME | |
| SENSOR_ANOMALIES | |
| SENSOR_ID | |
| SENSOR_MODE | |
| SENSOR_MODE_SLC | |
| SPACECRAFT_ID | |
| STATION_ID | |
| SOLAR_AZIMUTH_ANGLE | SUN_AZIMUTH |
| SOLAR_ZENITH_ANGLE | SUN_ELEVATION (Collection 2 menggunakan elevasi, bukan sudut zenit. Untuk menghitung sudut zenit, gunakan 90 - elevation.) |
| SR_APP_VERSION | |
| TEMPERATURE_ADD_BAND_ST_B6 | |
| TEMPERATURE_MAXIMUM_BAND_ST_B6 | |
| TEMPERATURE_MINIMUM_BAND_ST_B6 | |
| TEMPERATURE_MULT_BAND_ST_B6 | |
| THERMAL_LINES | |
| THERMAL_SAMPLES | |
| UTM_ZONE | |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE |
Reflektansi di atas atmosfer
OLI
ID Aset
Ganti C01 dengan C02 di ID gambar dan koleksi. Misalnya,
Landsat 8 OLI Tingkat 1
(Landsat 9 OLI-2 tidak disertakan dalam Koleksi 1):
| Koleksi 1 | Koleksi 2 |
|---|---|
| LANDSAT/LC08/C01/T1_TOA | LANDSAT/LC08/C02/T1_TOA |
Nama band
Perhatikan perubahan nama band dan penambahan band baru.
Perluas untuk melihat perubahan nama band dan penambahan band baru
| Deskripsi | Nama Koleksi 1 | Nama Koleksi 2 |
|---|---|---|
| Aerosol pesisir | B1 | B1 |
| Biru | B2 | B2 |
| Hijau | B3 | B3 |
| Merah | B4 | B4 |
| Inframerah dekat | B5 | B5 |
| Inframerah gelombang pendek 1 | B6 | B6 |
| Inframerah gelombang pendek 2 | B7 | B7 |
| Panchromatic | B8 | B8 |
| Cirrus | B9 | B9 |
| Inframerah termal 1 | B10 | B10 |
| Inframerah termal 2 | B11 | B11 |
| Bitmask QA | BQA | QA_PIXEL |
| Pengujian kualitas saturasi radiometrik | QA_RADSAT | |
| Sudut azimut matahari | SAA | |
| Sudut zenit matahari | SZA | |
| Melihat sudut azimut | VAA | |
| Melihat sudut zenit | VZA |
Perbarui kode yang memilih band yang namanya telah berubah, misalnya, band bitmask QA:
| Koleksi 1 | Koleksi 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
Penskalaan nilai
Tidak ada perubahan yang diperlukan. Koleksi 1 dan Koleksi 2 memiliki penskalaan yang sama untuk nilai termal dan reflektansi atas atmosfer.
Penyamaran QA
Kode bit telah berubah untuk bitmask QA. Lihat bagian "Bitmask untuk QA_PIXEL" (Collection 2) dan "Bitmask untuk BQA" (Collection 1) di entri katalog untuk kode.
Ekspresi berikut membuat masker awan dan bayangan untuk gambar tertentu menggunakan kode bitmask QA Kumpulan Data 2.
Editor Kode (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
Properti gambar
Dalam transisi dari Koleksi 1 ke Koleksi 2, beberapa properti gambar ditambahkan dan beberapa dihapus. Tidak ada nama properti yang diubah. Lihat tabel perbandingan properti berikut untuk menentukan apakah Anda perlu mengubah kode untuk mengakomodasi properti yang tidak ada atau ditambahkan (misalnya, dalam pemfilteran atau pemrosesan). Lihat tab Properti Gambar di halaman katalog produk untuk deskripsi properti Koleksi 2.
Luaskan untuk membandingkan daftar properti
| Koleksi 1 | Koleksi 2 |
|---|---|
| BPF_NAME_OLI | |
| BPF_NAME_TIRS | |
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CPF_NAME | |
| DATA_SOURCE_ELEVATION | |
| DATA_SOURCE_TIRS_STRAY_LIGHT_CORRECTION | |
| DATA_TYPE | |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| FILE_DATE | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
| GRID_CELL_SIZE_PANCHROMATIC | GRID_CELL_SIZE_PANCHROMATIC |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY_OLI | IMAGE_QUALITY_OLI |
| IMAGE_QUALITY_TIRS | IMAGE_QUALITY_TIRS |
| K1_CONSTANT_BAND_10 | K1_CONSTANT_BAND_10 |
| K1_CONSTANT_BAND_11 | K1_CONSTANT_BAND_11 |
| K2_CONSTANT_BAND_10 | K2_CONSTANT_BAND_10 |
| K2_CONSTANT_BAND_11 | K2_CONSTANT_BAND_11 |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| NADIR_OFFNADIR | NADIR_OFFNADIR |
| ORIENTASI | ORIENTASI |
| PANCHROMATIC_LINES | PANCHROMATIC_LINES |
| PANCHROMATIC_SAMPLES | PANCHROMATIC_SAMPLES |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
| RADIANCE_ADD_BAND_10 | RADIANCE_ADD_BAND_10 |
| RADIANCE_ADD_BAND_11 | RADIANCE_ADD_BAND_11 |
| RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
| RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_ADD_BAND_8 | RADIANCE_ADD_BAND_8 |
| RADIANCE_ADD_BAND_9 | RADIANCE_ADD_BAND_9 |
| RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
| RADIANCE_MULT_BAND_10 | RADIANCE_MULT_BAND_10 |
| RADIANCE_MULT_BAND_11 | RADIANCE_MULT_BAND_11 |
| RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
| RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| RADIANCE_MULT_BAND_8 | RADIANCE_MULT_BAND_8 |
| RADIANCE_MULT_BAND_9 | RADIANCE_MULT_BAND_9 |
| REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
| REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
| REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_6 | REFLECTANCE_ADD_BAND_6 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_ADD_BAND_8 | REFLECTANCE_ADD_BAND_8 |
| REFLECTANCE_ADD_BAND_9 | REFLECTANCE_ADD_BAND_9 |
| REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
| REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
| REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_6 | REFLECTANCE_MULT_BAND_6 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTANCE_MULT_BAND_8 | REFLECTANCE_MULT_BAND_8 |
| REFLECTANCE_MULT_BAND_9 | REFLECTANCE_MULT_BAND_9 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| RLUT_FILE_NAME | |
| ROLL_ANGLE | ROLL_ANGLE |
| SATURATION_BAND_1 | SATURATION_BAND_1 |
| SATURATION_BAND_2 | SATURATION_BAND_2 |
| SATURATION_BAND_3 | SATURATION_BAND_3 |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6 | SATURATION_BAND_6 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SATURATION_BAND_8 | SATURATION_BAND_8 |
| SATURATION_BAND_9 | SATURATION_BAND_9 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ID | SENSOR_ID |
| SPACECRAFT_ID | SPACECRAFT_ID |
| STATION_ID | STATION_ID |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| TARGET_WRS_PATH | TARGET_WRS_PATH |
| TARGET_WRS_ROW | TARGET_WRS_ROW |
| THERMAL_LINES | THERMAL_LINES |
| THERMAL_SAMPLES | THERMAL_SAMPLES |
| TIRS_SSM_MODEL | TIRS_SSM_MODEL |
| TIRS_SSM_POSITION_STATUS | TIRS_SSM_POSITION_STATUS |
| TIRS_STRAY_LIGHT_CORRECTION_SOURCE | |
| TRUNCATION_OLI | TRUNCATION_OLI |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE | |
| google:registration_count | |
| google:registration_offset_x | |
| google:registration_offset_y | |
| google:registration_ratio |
ETM+
ID Aset
Ganti C01 dengan C02 di ID gambar dan koleksi. Misalnya,
Landsat 7 ETM+ Tingkat 1:
| Koleksi 1 | Koleksi 2 |
|---|---|
| LANDSAT/LE07/C01/T1_TOA | LANDSAT/LE07/C02/T1_TOA |
Nama band
Perhatikan perubahan nama band dan penambahan band baru.
Perluas untuk melihat perubahan nama band dan penambahan band baru
| Deskripsi | Nama Koleksi 1 | Nama Koleksi 2 |
|---|---|---|
| Biru | B1 | B1 |
| Hijau | B2 | B2 |
| Merah | B3 | B3 |
| Inframerah dekat | B4 | B4 |
| Inframerah gelombang pendek 1 | B5 | B5 |
| Inframerah termal dengan penguatan rendah 1 | B6_VCID_1 | B6_VCID_1 |
| Inframerah termal dengan penguatan tinggi 1 | B6_VCID_2 | B6_VCID_2 |
| Inframerah gelombang pendek 2 | B7 | B7 |
| Panchromatic | B8 | B8 |
| Bitmask QA | BQA | QA_PIXEL |
| Pengujian kualitas saturasi radiometrik | QA_RADSAT | |
| Sudut azimut matahari | SAA | |
| Sudut zenit matahari | SZA | |
| Melihat sudut azimut | VAA | |
| Melihat sudut zenit | VZA |
Perbarui kode yang memilih band yang namanya telah berubah, misalnya, band bitmask QA:
| Koleksi 1 | Koleksi 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
Penskalaan nilai
Tidak ada perubahan yang diperlukan. Koleksi 1 dan Koleksi 2 memiliki penskalaan yang sama untuk nilai termal dan reflektansi atas atmosfer.
Penyamaran QA
Kode bit telah berubah untuk bitmask QA. Lihat bagian "Bitmask untuk QA_PIXEL" (Collection 2) dan "Bitmask untuk BQA" (Collection 1) di entri katalog untuk kode.
Ekspresi berikut membuat masker awan dan bayangan untuk gambar tertentu menggunakan kode bitmask QA Kumpulan Data 2.
Editor Kode (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
Properti gambar
Dalam transisi dari Koleksi 1 ke Koleksi 2, beberapa properti gambar ditambahkan dan beberapa dihapus. Tidak ada nama properti yang diubah. Lihat tabel perbandingan properti berikut untuk menentukan apakah Anda perlu mengubah kode untuk mengakomodasi properti yang tidak ada atau ditambahkan (misalnya, dalam pemfilteran atau pemrosesan). Lihat tab Properti Gambar di halaman katalog produk untuk deskripsi properti Koleksi 2.
Luaskan untuk membandingkan daftar properti
| Koleksi 1 | Koleksi 2 |
|---|---|
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CORRECTION_BIAS_BAND_1 | CORRECTION_BIAS_BAND_1 |
| CORRECTION_BIAS_BAND_2 | CORRECTION_BIAS_BAND_2 |
| CORRECTION_BIAS_BAND_3 | CORRECTION_BIAS_BAND_3 |
| CORRECTION_BIAS_BAND_4 | CORRECTION_BIAS_BAND_4 |
| CORRECTION_BIAS_BAND_5 | CORRECTION_BIAS_BAND_5 |
| CORRECTION_BIAS_BAND_6_VCID_1 | CORRECTION_BIAS_BAND_6_VCID_1 |
| CORRECTION_BIAS_BAND_6_VCID_2 | CORRECTION_BIAS_BAND_6_VCID_2 |
| CORRECTION_BIAS_BAND_7 | CORRECTION_BIAS_BAND_7 |
| CORRECTION_BIAS_BAND_8 | CORRECTION_BIAS_BAND_8 |
| CORRECTION_GAIN_BAND_1 | CORRECTION_GAIN_BAND_1 |
| CORRECTION_GAIN_BAND_2 | CORRECTION_GAIN_BAND_2 |
| CORRECTION_GAIN_BAND_3 | CORRECTION_GAIN_BAND_3 |
| CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
| CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
| CORRECTION_GAIN_BAND_6_VCID_1 | CORRECTION_GAIN_BAND_6_VCID_1 |
| CORRECTION_GAIN_BAND_6_VCID_2 | CORRECTION_GAIN_BAND_6_VCID_2 |
| CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
| CORRECTION_GAIN_BAND_8 | CORRECTION_GAIN_BAND_8 |
| CPF_NAME | |
| DATA_CATEGORY | |
| DATA_SOURCE_ELEVATION | |
| DATA_TYPE | |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| EPHEMERIS_TYPE | EPHEMERIS_TYPE |
| FILE_DATE | |
| GAIN_BAND_1 | GAIN_BAND_1 |
| GAIN_BAND_2 | GAIN_BAND_2 |
| GAIN_BAND_3 | GAIN_BAND_3 |
| GAIN_BAND_4 | GAIN_BAND_4 |
| GAIN_BAND_5 | GAIN_BAND_5 |
| GAIN_BAND_6_VCID_1 | GAIN_BAND_6_VCID_1 |
| GAIN_BAND_6_VCID_2 | GAIN_BAND_6_VCID_2 |
| GAIN_BAND_7 | GAIN_BAND_7 |
| GAIN_BAND_8 | GAIN_BAND_8 |
| GAIN_CHANGE_BAND_1 | GAIN_CHANGE_BAND_1 |
| GAIN_CHANGE_BAND_2 | GAIN_CHANGE_BAND_2 |
| GAIN_CHANGE_BAND_3 | GAIN_CHANGE_BAND_3 |
| GAIN_CHANGE_BAND_4 | GAIN_CHANGE_BAND_4 |
| GAIN_CHANGE_BAND_5 | GAIN_CHANGE_BAND_5 |
| GAIN_CHANGE_BAND_6_VCID_1 | GAIN_CHANGE_BAND_6_VCID_1 |
| GAIN_CHANGE_BAND_6_VCID_2 | GAIN_CHANGE_BAND_6_VCID_2 |
| GAIN_CHANGE_BAND_7 | GAIN_CHANGE_BAND_7 |
| GAIN_CHANGE_BAND_8 | GAIN_CHANGE_BAND_8 |
| GAIN_CHANGE_SCAN_BAND_1 | GAIN_CHANGE_SCAN_BAND_1 |
| GAIN_CHANGE_SCAN_BAND_2 | GAIN_CHANGE_SCAN_BAND_2 |
| GAIN_CHANGE_SCAN_BAND_3 | GAIN_CHANGE_SCAN_BAND_3 |
| GAIN_CHANGE_SCAN_BAND_4 | GAIN_CHANGE_SCAN_BAND_4 |
| GAIN_CHANGE_SCAN_BAND_5 | GAIN_CHANGE_SCAN_BAND_5 |
| GAIN_CHANGE_SCAN_BAND_6_VCID_1 | GAIN_CHANGE_SCAN_BAND_6_VCID_1 |
| GAIN_CHANGE_SCAN_BAND_6_VCID_2 | GAIN_CHANGE_SCAN_BAND_6_VCID_2 |
| GAIN_CHANGE_SCAN_BAND_7 | GAIN_CHANGE_SCAN_BAND_7 |
| GAIN_CHANGE_SCAN_BAND_8 | GAIN_CHANGE_SCAN_BAND_8 |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GRID_CELL_SIZE_PANCHROMATIC | GRID_CELL_SIZE_PANCHROMATIC |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY | IMAGE_QUALITY |
| K1_CONSTANT_BAND_6_VCID_1 | K1_CONSTANT_BAND_6_VCID_1 |
| K1_CONSTANT_BAND_6_VCID_2 | K1_CONSTANT_BAND_6_VCID_2 |
| K2_CONSTANT_BAND_6_VCID_1 | K2_CONSTANT_BAND_6_VCID_1 |
| K2_CONSTANT_BAND_6_VCID_2 | K2_CONSTANT_BAND_6_VCID_2 |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| ORIENTASI | ORIENTASI |
| PANCHROMATIC_LINES | PANCHROMATIC_LINES |
| PANCHROMATIC_SAMPLES | PANCHROMATIC_SAMPLES |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
| RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
| RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6_VCID_1 | RADIANCE_ADD_BAND_6_VCID_1 |
| RADIANCE_ADD_BAND_6_VCID_2 | RADIANCE_ADD_BAND_6_VCID_2 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_ADD_BAND_8 | RADIANCE_ADD_BAND_8 |
| RADIANCE_MAXIMUM_BAND_1 | |
| RADIANCE_MAXIMUM_BAND_2 | |
| RADIANCE_MAXIMUM_BAND_3 | |
| RADIANCE_MAXIMUM_BAND_4 | |
| RADIANCE_MAXIMUM_BAND_5 | |
| RADIANCE_MAXIMUM_BAND_6_VCID_1 | |
| RADIANCE_MAXIMUM_BAND_6_VCID_2 | |
| RADIANCE_MAXIMUM_BAND_7 | |
| RADIANCE_MAXIMUM_BAND_8 | |
| RADIANCE_MINIMUM_BAND_1 | |
| RADIANCE_MINIMUM_BAND_2 | |
| RADIANCE_MINIMUM_BAND_3 | |
| RADIANCE_MINIMUM_BAND_4 | |
| RADIANCE_MINIMUM_BAND_5 | |
| RADIANCE_MINIMUM_BAND_6_VCID_1 | |
| RADIANCE_MINIMUM_BAND_6_VCID_2 | |
| RADIANCE_MINIMUM_BAND_7 | |
| RADIANCE_MINIMUM_BAND_8 | |
| RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
| RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
| RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6_VCID_1 | RADIANCE_MULT_BAND_6_VCID_1 |
| RADIANCE_MULT_BAND_6_VCID_2 | RADIANCE_MULT_BAND_6_VCID_2 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| RADIANCE_MULT_BAND_8 | RADIANCE_MULT_BAND_8 |
| REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
| REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
| REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_ADD_BAND_8 | REFLECTANCE_ADD_BAND_8 |
| REFLECTANCE_MAXIMUM_BAND_1 | |
| REFLECTANCE_MAXIMUM_BAND_2 | |
| REFLECTANCE_MAXIMUM_BAND_3 | |
| REFLECTANCE_MAXIMUM_BAND_4 | |
| REFLECTANCE_MAXIMUM_BAND_5 | |
| REFLECTANCE_MAXIMUM_BAND_7 | |
| REFLECTANCE_MAXIMUM_BAND_8 | |
| REFLECTANCE_MINIMUM_BAND_1 | |
| REFLECTANCE_MINIMUM_BAND_2 | |
| REFLECTANCE_MINIMUM_BAND_3 | |
| REFLECTANCE_MINIMUM_BAND_4 | |
| REFLECTANCE_MINIMUM_BAND_5 | |
| REFLECTANCE_MINIMUM_BAND_7 | |
| REFLECTANCE_MINIMUM_BAND_8 | |
| REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
| REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
| REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTANCE_MULT_BAND_8 | REFLECTANCE_MULT_BAND_8 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| SATURATION_BAND_1 | SATURATION_BAND_1 |
| SATURATION_BAND_2 | SATURATION_BAND_2 |
| SATURATION_BAND_3 | SATURATION_BAND_3 |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6_VCID_1 | SATURATION_BAND_6_VCID_1 |
| SATURATION_BAND_6_VCID_2 | SATURATION_BAND_6_VCID_2 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SATURATION_BAND_8 | SATURATION_BAND_8 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ANOMALIES | |
| SENSOR_ID | SENSOR_ID |
| SENSOR_MODE | SENSOR_MODE |
| SENSOR_MODE_SLC | |
| SPACECRAFT_ID | SPACECRAFT_ID |
| STATION_ID | STATION_ID |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| THERMAL_LINES | THERMAL_LINES |
| THERMAL_SAMPLES | THERMAL_SAMPLES |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE | |
| google:registration_count | |
| google:registration_offset_x | |
| google:registration_offset_y | |
| google:registration_ratio |
TM
ID Aset
Ganti C01 dengan C02 di ID gambar dan koleksi. Misalnya,
Landsat 5 TM Tingkat 1:
| Koleksi 1 | Koleksi 2 |
|---|---|
| LANDSAT/LT05/C01/T1_TOA | LANDSAT/LT05/C02/T1_TOA |
Nama band
Perhatikan perubahan nama band dan penambahan band baru.
Perluas untuk melihat perubahan nama band dan penambahan band baru
| Deskripsi | Nama Koleksi 1 | Nama Koleksi 2 |
|---|---|---|
| Biru | B1 | B1 |
| Hijau | B2 | B2 |
| Merah | B3 | B3 |
| Inframerah dekat | B4 | B4 |
| Inframerah gelombang pendek 1 | B5 | B5 |
| Inframerah termal 1 | B6 | B6 |
| Inframerah gelombang pendek 2 | B7 | B7 |
| Bitmask QA | BQA | QA_PIXEL |
| Pengujian kualitas saturasi radiometrik | QA_RADSAT | |
| Sudut azimut matahari | SAA | |
| Sudut zenit matahari | SZA | |
| Melihat sudut azimut | VAA | |
| Melihat sudut zenit | VZA |
Perbarui kode yang memilih band yang namanya telah berubah, misalnya, band bitmask QA:
| Koleksi 1 | Koleksi 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
Penskalaan nilai
Tidak ada perubahan yang diperlukan. Koleksi 1 dan Koleksi 2 memiliki penskalaan yang sama untuk nilai termal dan reflektansi atas atmosfer.
Penyamaran QA
Kode bit telah berubah untuk bitmask QA. Lihat bagian "Bitmask untuk QA_PIXEL" (Koleksi 2) dan "Bitmask untuk BQA" (Koleksi 1) dalam entri katalog untuk kode (misalnya, TM 5).
Ekspresi berikut membuat masker awan dan bayangan untuk gambar tertentu menggunakan kode bitmask QA Kumpulan Data 2.
Editor Kode (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
Properti gambar
Dalam transisi dari Koleksi 1 ke Koleksi 2, beberapa properti gambar ditambahkan dan beberapa dihapus. Tidak ada nama properti yang diubah. Lihat tabel perbandingan properti berikut untuk menentukan apakah Anda perlu mengubah kode untuk mengakomodasi properti yang tidak ada atau ditambahkan (misalnya, dalam pemfilteran atau pemrosesan). Lihat tab Properti Gambar di halaman katalog produk untuk deskripsi properti Koleksi 2 (misalnya, TM 5).
Luaskan untuk membandingkan daftar properti
| Koleksi 1 | Koleksi 2 |
|---|---|
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CORNER_LL_LAT_PRODUCT | |
| CORNER_LL_LON_PRODUCT | |
| CORNER_LL_PROJECTION_X_PRODUCT | |
| CORNER_LL_PROJECTION_Y_PRODUCT | |
| CORNER_LR_LAT_PRODUCT | |
| CORNER_LR_LON_PRODUCT | |
| CORNER_LR_PROJECTION_X_PRODUCT | |
| CORNER_LR_PROJECTION_Y_PRODUCT | |
| CORNER_UL_LAT_PRODUCT | |
| CORNER_UL_LON_PRODUCT | |
| CORNER_UL_PROJECTION_X_PRODUCT | |
| CORNER_UL_PROJECTION_Y_PRODUCT | |
| CORNER_UR_LAT_PRODUCT | |
| CORNER_UR_LON_PRODUCT | |
| CORNER_UR_PROJECTION_X_PRODUCT | |
| CORNER_UR_PROJECTION_Y_PRODUCT | |
| CORRECTION_BIAS_BAND_1 | CORRECTION_BIAS_BAND_1 |
| CORRECTION_BIAS_BAND_2 | CORRECTION_BIAS_BAND_2 |
| CORRECTION_BIAS_BAND_3 | CORRECTION_BIAS_BAND_3 |
| CORRECTION_BIAS_BAND_4 | CORRECTION_BIAS_BAND_4 |
| CORRECTION_BIAS_BAND_5 | CORRECTION_BIAS_BAND_5 |
| CORRECTION_BIAS_BAND_6 | CORRECTION_BIAS_BAND_6 |
| CORRECTION_BIAS_BAND_7 | CORRECTION_BIAS_BAND_7 |
| CORRECTION_GAIN_BAND_1 | CORRECTION_GAIN_BAND_1 |
| CORRECTION_GAIN_BAND_2 | CORRECTION_GAIN_BAND_2 |
| CORRECTION_GAIN_BAND_3 | CORRECTION_GAIN_BAND_3 |
| CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
| CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
| CORRECTION_GAIN_BAND_6 | CORRECTION_GAIN_BAND_6 |
| CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
| CPF_NAME | |
| DATA_CATEGORY | |
| DATA_SOURCE_ELEVATION | |
| DATA_TYPE | |
| DATA_TYPE_L0RP | DATA_TYPE_L0RP |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| EPHEMERIS_TYPE | EPHEMERIS_TYPE |
| FILE_DATE | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
| GEOMETRIC_RMSE_VERIFY_QUAD_LL | GEOMETRIC_RMSE_VERIFY_QUAD_LL |
| GEOMETRIC_RMSE_VERIFY_QUAD_LR | GEOMETRIC_RMSE_VERIFY_QUAD_LR |
| GEOMETRIC_RMSE_VERIFY_QUAD_UL | GEOMETRIC_RMSE_VERIFY_QUAD_UL |
| GEOMETRIC_RMSE_VERIFY_QUAD_UR | GEOMETRIC_RMSE_VERIFY_QUAD_UR |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY | IMAGE_QUALITY |
| K1_CONSTANT_BAND_6 | K1_CONSTANT_BAND_6 |
| K2_CONSTANT_BAND_6 | K2_CONSTANT_BAND_6 |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| MAP_PROJECTION_L0RA | MAP_PROJECTION_L0RA |
| ORIENTASI | ORIENTASI |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
| RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
| RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_MAXIMUM_BAND_1 | |
| RADIANCE_MAXIMUM_BAND_2 | |
| RADIANCE_MAXIMUM_BAND_3 | |
| RADIANCE_MAXIMUM_BAND_4 | |
| RADIANCE_MAXIMUM_BAND_5 | |
| RADIANCE_MAXIMUM_BAND_6 | |
| RADIANCE_MAXIMUM_BAND_7 | |
| RADIANCE_MINIMUM_BAND_1 | |
| RADIANCE_MINIMUM_BAND_2 | |
| RADIANCE_MINIMUM_BAND_3 | |
| RADIANCE_MINIMUM_BAND_4 | |
| RADIANCE_MINIMUM_BAND_5 | |
| RADIANCE_MINIMUM_BAND_6 | |
| RADIANCE_MINIMUM_BAND_7 | |
| RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
| RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
| RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
| REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
| REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_MAXIMUM_BAND_1 | |
| REFLECTANCE_MAXIMUM_BAND_2 | |
| REFLECTANCE_MAXIMUM_BAND_3 | |
| REFLECTANCE_MAXIMUM_BAND_4 | |
| REFLECTANCE_MAXIMUM_BAND_5 | |
| REFLECTANCE_MAXIMUM_BAND_7 | |
| REFLECTANCE_MINIMUM_BAND_1 | |
| REFLECTANCE_MINIMUM_BAND_2 | |
| REFLECTANCE_MINIMUM_BAND_3 | |
| REFLECTANCE_MINIMUM_BAND_4 | |
| REFLECTANCE_MINIMUM_BAND_5 | |
| REFLECTANCE_MINIMUM_BAND_7 | |
| REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
| REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
| REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| SATURATION_BAND_1 | SATURATION_BAND_1 |
| SATURATION_BAND_2 | SATURATION_BAND_2 |
| SATURATION_BAND_3 | SATURATION_BAND_3 |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6 | SATURATION_BAND_6 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ANOMALIES | |
| SENSOR_ID | SENSOR_ID |
| SENSOR_MODE | SENSOR_MODE |
| SENSOR_MODE_SLC | |
| SPACECRAFT_ID | SPACECRAFT_ID |
| STATION_ID | STATION_ID |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| THERMAL_LINES | THERMAL_LINES |
| THERMAL_SAMPLES | THERMAL_SAMPLES |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE | |
| google:registration_count | |
| google:registration_offset_x | |
| google:registration_offset_y | |
| google:registration_ratio |
Pancaran yang diskalakan (DN)
OLI
ID Aset
Ganti C01 dengan C02 di ID gambar dan koleksi. Misalnya,
Landsat 8 OLI Tingkat 1
(Landsat 9 OLI-2 tidak disertakan dalam Koleksi 1):
| Koleksi 1 | Koleksi 2 |
|---|---|
| LANDSAT/LC08/C01/T1 | LANDSAT/LC08/C02/T1 |
Nama band
Perhatikan perubahan nama band dan penambahan band baru.
Perluas untuk melihat perubahan nama band dan penambahan band baru
| Deskripsi | Nama Koleksi 1 | Nama Koleksi 2 |
|---|---|---|
| Aerosol pesisir | B1 | B1 |
| Biru | B2 | B2 |
| Hijau | B3 | B3 |
| Merah | B4 | B4 |
| Inframerah dekat | B5 | B5 |
| Inframerah gelombang pendek 1 | B6 | B6 |
| Inframerah gelombang pendek 2 | B7 | B7 |
| Panchromatic | B8 | B8 |
| Cirrus | B9 | B9 |
| Inframerah termal 1 | B10 | B10 |
| Inframerah termal 2 | B11 | B11 |
| Bitmask QA | BQA | QA_PIXEL |
| Pengujian kualitas saturasi radiometrik | QA_RADSAT | |
| Sudut azimut matahari | SAA | |
| Sudut zenit matahari | SZA | |
| Melihat sudut azimut | VAA | |
| Melihat sudut zenit | VZA |
Perbarui kode yang memilih band yang namanya telah berubah, misalnya, band bitmask QA:
| Koleksi 1 | Koleksi 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
Penskalaan nilai
Tidak ada perubahan yang diperlukan. Koleksi 1 dan Koleksi 2 memiliki penskalaan yang sama untuk nilai termal dan pantulan DN mentah.
Penyamaran QA
Kode bit telah berubah untuk bitmask QA. Lihat bagian "Bitmask untuk QA_PIXEL" (Collection 2) dan "Bitmask untuk BQA" (Collection 1) di entri katalog untuk kode.
Ekspresi berikut membuat masker awan dan bayangan untuk gambar tertentu menggunakan kode bitmask QA Kumpulan Data 2.
Editor Kode (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
Properti gambar
Dalam transisi dari Koleksi 1 ke Koleksi 2, beberapa properti gambar ditambahkan dan beberapa dihapus. Tidak ada nama properti yang diubah. Lihat tabel perbandingan properti berikut untuk menentukan apakah Anda perlu mengubah kode untuk mengakomodasi properti yang tidak ada atau ditambahkan (misalnya, dalam pemfilteran atau pemrosesan). Lihat tab Properti Gambar di halaman katalog produk untuk deskripsi properti Koleksi 2.
Luaskan untuk membandingkan daftar properti
| Koleksi 1 | Koleksi 2 |
|---|---|
| BPF_NAME_OLI | |
| BPF_NAME_TIRS | |
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CPF_NAME | |
| DATA_SOURCE_ELEVATION | |
| DATA_SOURCE_TIRS_STRAY_LIGHT_CORRECTION | |
| DATA_TYPE | |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| FILE_DATE | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
| GRID_CELL_SIZE_PANCHROMATIC | GRID_CELL_SIZE_PANCHROMATIC |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY_OLI | IMAGE_QUALITY_OLI |
| IMAGE_QUALITY_TIRS | IMAGE_QUALITY_TIRS |
| K1_CONSTANT_BAND_10 | K1_CONSTANT_BAND_10 |
| K1_CONSTANT_BAND_11 | K1_CONSTANT_BAND_11 |
| K2_CONSTANT_BAND_10 | K2_CONSTANT_BAND_10 |
| K2_CONSTANT_BAND_11 | K2_CONSTANT_BAND_11 |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| NADIR_OFFNADIR | NADIR_OFFNADIR |
| ORIENTASI | ORIENTASI |
| PANCHROMATIC_LINES | PANCHROMATIC_LINES |
| PANCHROMATIC_SAMPLES | PANCHROMATIC_SAMPLES |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
| RADIANCE_ADD_BAND_10 | RADIANCE_ADD_BAND_10 |
| RADIANCE_ADD_BAND_11 | RADIANCE_ADD_BAND_11 |
| RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
| RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_ADD_BAND_8 | RADIANCE_ADD_BAND_8 |
| RADIANCE_ADD_BAND_9 | RADIANCE_ADD_BAND_9 |
| RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
| RADIANCE_MULT_BAND_10 | RADIANCE_MULT_BAND_10 |
| RADIANCE_MULT_BAND_11 | RADIANCE_MULT_BAND_11 |
| RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
| RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| RADIANCE_MULT_BAND_8 | RADIANCE_MULT_BAND_8 |
| RADIANCE_MULT_BAND_9 | RADIANCE_MULT_BAND_9 |
| REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
| REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
| REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_6 | REFLECTANCE_ADD_BAND_6 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_ADD_BAND_8 | REFLECTANCE_ADD_BAND_8 |
| REFLECTANCE_ADD_BAND_9 | REFLECTANCE_ADD_BAND_9 |
| REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
| REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
| REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_6 | REFLECTANCE_MULT_BAND_6 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTANCE_MULT_BAND_8 | REFLECTANCE_MULT_BAND_8 |
| REFLECTANCE_MULT_BAND_9 | REFLECTANCE_MULT_BAND_9 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| RLUT_FILE_NAME | |
| ROLL_ANGLE | ROLL_ANGLE |
| SATURATION_BAND_1 | SATURATION_BAND_1 |
| SATURATION_BAND_2 | SATURATION_BAND_2 |
| SATURATION_BAND_3 | SATURATION_BAND_3 |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6 | SATURATION_BAND_6 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SATURATION_BAND_8 | SATURATION_BAND_8 |
| SATURATION_BAND_9 | SATURATION_BAND_9 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ID | SENSOR_ID |
| SPACECRAFT_ID | SPACECRAFT_ID |
| STATION_ID | STATION_ID |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| TARGET_WRS_PATH | TARGET_WRS_PATH |
| TARGET_WRS_ROW | TARGET_WRS_ROW |
| THERMAL_LINES | THERMAL_LINES |
| THERMAL_SAMPLES | THERMAL_SAMPLES |
| TIRS_SSM_MODEL | TIRS_SSM_MODEL |
| TIRS_SSM_POSITION_STATUS | TIRS_SSM_POSITION_STATUS |
| TIRS_STRAY_LIGHT_CORRECTION_SOURCE | |
| TRUNCATION_OLI | TRUNCATION_OLI |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE | |
| google:registration_count | |
| google:registration_offset_x | |
| google:registration_offset_y | |
| google:registration_ratio |
ETM+
ID Aset
Ganti C01 dengan C02 di ID gambar dan koleksi. Misalnya,
Landsat 7 ETM+ Tingkat 1:
| Koleksi 1 | Koleksi 2 |
|---|---|
| LANDSAT/LE07/C01/T1 | LANDSAT/LE07/C02/T1 |
Nama band
Perhatikan perubahan nama band dan penambahan band baru.
Perluas untuk melihat perubahan nama band dan penambahan band baru
| Deskripsi | Nama Koleksi 1 | Nama Koleksi 2 |
|---|---|---|
| Biru | B1 | B1 |
| Hijau | B2 | B2 |
| Merah | B3 | B3 |
| Inframerah dekat | B4 | B4 |
| Inframerah gelombang pendek 1 | B5 | B5 |
| Inframerah termal dengan penguatan rendah 1 | B6_VCID_1 | B6_VCID_1 |
| Inframerah termal dengan penguatan tinggi 1 | B6_VCID_2 | B6_VCID_2 |
| Inframerah gelombang pendek 2 | B7 | B7 |
| Panchromatic | B8 | B8 |
| Bitmask QA | BQA | QA_PIXEL |
| Pengujian kualitas saturasi radiometrik | QA_RADSAT | |
| Sudut azimut matahari | SAA | |
| Sudut zenit matahari | SZA | |
| Melihat sudut azimut | VAA | |
| Melihat sudut zenit | VZA |
Perbarui kode yang memilih band yang namanya telah berubah, misalnya, band bitmask QA:
| Koleksi 1 | Koleksi 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
Penskalaan nilai
Tidak ada perubahan yang diperlukan. Koleksi 1 dan Koleksi 2 memiliki penskalaan yang sama untuk nilai termal dan pantulan DN mentah.
Penyamaran QA
Kode bit telah berubah untuk bitmask QA. Lihat bagian "Bitmask untuk QA_PIXEL" (Collection 2) dan "Bitmask untuk BQA" (Collection 1) di entri katalog untuk kode.
Ekspresi berikut membuat masker awan dan bayangan untuk gambar tertentu menggunakan kode bitmask QA Kumpulan Data 2.
Editor Kode (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
Properti gambar
Dalam transisi dari Koleksi 1 ke Koleksi 2, beberapa properti gambar ditambahkan dan beberapa dihapus. Tidak ada nama properti yang diubah. Lihat tabel perbandingan properti berikut untuk menentukan apakah Anda perlu mengubah kode untuk mengakomodasi properti yang tidak ada atau ditambahkan (misalnya, dalam pemfilteran atau pemrosesan). Lihat tab Properti Gambar di halaman katalog produk untuk deskripsi properti Koleksi 2.
Luaskan untuk membandingkan daftar properti
| Koleksi 1 | Koleksi 2 |
|---|---|
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CORRECTION_BIAS_BAND_1 | CORRECTION_BIAS_BAND_1 |
| CORRECTION_BIAS_BAND_2 | CORRECTION_BIAS_BAND_2 |
| CORRECTION_BIAS_BAND_3 | CORRECTION_BIAS_BAND_3 |
| CORRECTION_BIAS_BAND_4 | CORRECTION_BIAS_BAND_4 |
| CORRECTION_BIAS_BAND_5 | CORRECTION_BIAS_BAND_5 |
| CORRECTION_BIAS_BAND_6_VCID_1 | CORRECTION_BIAS_BAND_6_VCID_1 |
| CORRECTION_BIAS_BAND_6_VCID_2 | CORRECTION_BIAS_BAND_6_VCID_2 |
| CORRECTION_BIAS_BAND_7 | CORRECTION_BIAS_BAND_7 |
| CORRECTION_BIAS_BAND_8 | CORRECTION_BIAS_BAND_8 |
| CORRECTION_GAIN_BAND_1 | CORRECTION_GAIN_BAND_1 |
| CORRECTION_GAIN_BAND_2 | CORRECTION_GAIN_BAND_2 |
| CORRECTION_GAIN_BAND_3 | CORRECTION_GAIN_BAND_3 |
| CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
| CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
| CORRECTION_GAIN_BAND_6_VCID_1 | CORRECTION_GAIN_BAND_6_VCID_1 |
| CORRECTION_GAIN_BAND_6_VCID_2 | CORRECTION_GAIN_BAND_6_VCID_2 |
| CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
| CORRECTION_GAIN_BAND_8 | CORRECTION_GAIN_BAND_8 |
| CPF_NAME | |
| DATA_CATEGORY | |
| DATA_SOURCE_ELEVATION | |
| DATA_TYPE | |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| EPHEMERIS_TYPE | EPHEMERIS_TYPE |
| FILE_DATE | |
| GAIN_BAND_1 | GAIN_BAND_1 |
| GAIN_BAND_2 | GAIN_BAND_2 |
| GAIN_BAND_3 | GAIN_BAND_3 |
| GAIN_BAND_4 | GAIN_BAND_4 |
| GAIN_BAND_5 | GAIN_BAND_5 |
| GAIN_BAND_6_VCID_1 | GAIN_BAND_6_VCID_1 |
| GAIN_BAND_6_VCID_2 | GAIN_BAND_6_VCID_2 |
| GAIN_BAND_7 | GAIN_BAND_7 |
| GAIN_BAND_8 | GAIN_BAND_8 |
| GAIN_CHANGE_BAND_1 | GAIN_CHANGE_BAND_1 |
| GAIN_CHANGE_BAND_2 | GAIN_CHANGE_BAND_2 |
| GAIN_CHANGE_BAND_3 | GAIN_CHANGE_BAND_3 |
| GAIN_CHANGE_BAND_4 | GAIN_CHANGE_BAND_4 |
| GAIN_CHANGE_BAND_5 | GAIN_CHANGE_BAND_5 |
| GAIN_CHANGE_BAND_6_VCID_1 | GAIN_CHANGE_BAND_6_VCID_1 |
| GAIN_CHANGE_BAND_6_VCID_2 | GAIN_CHANGE_BAND_6_VCID_2 |
| GAIN_CHANGE_BAND_7 | GAIN_CHANGE_BAND_7 |
| GAIN_CHANGE_BAND_8 | GAIN_CHANGE_BAND_8 |
| GAIN_CHANGE_SCAN_BAND_1 | GAIN_CHANGE_SCAN_BAND_1 |
| GAIN_CHANGE_SCAN_BAND_2 | GAIN_CHANGE_SCAN_BAND_2 |
| GAIN_CHANGE_SCAN_BAND_3 | GAIN_CHANGE_SCAN_BAND_3 |
| GAIN_CHANGE_SCAN_BAND_4 | GAIN_CHANGE_SCAN_BAND_4 |
| GAIN_CHANGE_SCAN_BAND_5 | GAIN_CHANGE_SCAN_BAND_5 |
| GAIN_CHANGE_SCAN_BAND_6_VCID_1 | GAIN_CHANGE_SCAN_BAND_6_VCID_1 |
| GAIN_CHANGE_SCAN_BAND_6_VCID_2 | GAIN_CHANGE_SCAN_BAND_6_VCID_2 |
| GAIN_CHANGE_SCAN_BAND_7 | GAIN_CHANGE_SCAN_BAND_7 |
| GAIN_CHANGE_SCAN_BAND_8 | GAIN_CHANGE_SCAN_BAND_8 |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GRID_CELL_SIZE_PANCHROMATIC | GRID_CELL_SIZE_PANCHROMATIC |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY | IMAGE_QUALITY |
| K1_CONSTANT_BAND_6_VCID_1 | K1_CONSTANT_BAND_6_VCID_1 |
| K1_CONSTANT_BAND_6_VCID_2 | K1_CONSTANT_BAND_6_VCID_2 |
| K2_CONSTANT_BAND_6_VCID_1 | K2_CONSTANT_BAND_6_VCID_1 |
| K2_CONSTANT_BAND_6_VCID_2 | K2_CONSTANT_BAND_6_VCID_2 |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| ORIENTASI | ORIENTASI |
| PANCHROMATIC_LINES | PANCHROMATIC_LINES |
| PANCHROMATIC_SAMPLES | PANCHROMATIC_SAMPLES |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
| RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
| RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6_VCID_1 | RADIANCE_ADD_BAND_6_VCID_1 |
| RADIANCE_ADD_BAND_6_VCID_2 | RADIANCE_ADD_BAND_6_VCID_2 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_ADD_BAND_8 | RADIANCE_ADD_BAND_8 |
| RADIANCE_MAXIMUM_BAND_1 | |
| RADIANCE_MAXIMUM_BAND_2 | |
| RADIANCE_MAXIMUM_BAND_3 | |
| RADIANCE_MAXIMUM_BAND_4 | |
| RADIANCE_MAXIMUM_BAND_5 | |
| RADIANCE_MAXIMUM_BAND_6_VCID_1 | |
| RADIANCE_MAXIMUM_BAND_6_VCID_2 | |
| RADIANCE_MAXIMUM_BAND_7 | |
| RADIANCE_MAXIMUM_BAND_8 | |
| RADIANCE_MINIMUM_BAND_1 | |
| RADIANCE_MINIMUM_BAND_2 | |
| RADIANCE_MINIMUM_BAND_3 | |
| RADIANCE_MINIMUM_BAND_4 | |
| RADIANCE_MINIMUM_BAND_5 | |
| RADIANCE_MINIMUM_BAND_6_VCID_1 | |
| RADIANCE_MINIMUM_BAND_6_VCID_2 | |
| RADIANCE_MINIMUM_BAND_7 | |
| RADIANCE_MINIMUM_BAND_8 | |
| RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
| RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
| RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6_VCID_1 | RADIANCE_MULT_BAND_6_VCID_1 |
| RADIANCE_MULT_BAND_6_VCID_2 | RADIANCE_MULT_BAND_6_VCID_2 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| RADIANCE_MULT_BAND_8 | RADIANCE_MULT_BAND_8 |
| REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
| REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
| REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_ADD_BAND_8 | REFLECTANCE_ADD_BAND_8 |
| REFLECTANCE_MAXIMUM_BAND_1 | |
| REFLECTANCE_MAXIMUM_BAND_2 | |
| REFLECTANCE_MAXIMUM_BAND_3 | |
| REFLECTANCE_MAXIMUM_BAND_4 | |
| REFLECTANCE_MAXIMUM_BAND_5 | |
| REFLECTANCE_MAXIMUM_BAND_7 | |
| REFLECTANCE_MAXIMUM_BAND_8 | |
| REFLECTANCE_MINIMUM_BAND_1 | |
| REFLECTANCE_MINIMUM_BAND_2 | |
| REFLECTANCE_MINIMUM_BAND_3 | |
| REFLECTANCE_MINIMUM_BAND_4 | |
| REFLECTANCE_MINIMUM_BAND_5 | |
| REFLECTANCE_MINIMUM_BAND_7 | |
| REFLECTANCE_MINIMUM_BAND_8 | |
| REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
| REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
| REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTANCE_MULT_BAND_8 | REFLECTANCE_MULT_BAND_8 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| SATURATION_BAND_1 | SATURATION_BAND_1 |
| SATURATION_BAND_2 | SATURATION_BAND_2 |
| SATURATION_BAND_3 | SATURATION_BAND_3 |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6_VCID_1 | SATURATION_BAND_6_VCID_1 |
| SATURATION_BAND_6_VCID_2 | SATURATION_BAND_6_VCID_2 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SATURATION_BAND_8 | SATURATION_BAND_8 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ANOMALIES | |
| SENSOR_ID | SENSOR_ID |
| SENSOR_MODE | SENSOR_MODE |
| SENSOR_MODE_SLC | |
| SPACECRAFT_ID | SPACECRAFT_ID |
| STATION_ID | STATION_ID |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| THERMAL_LINES | THERMAL_LINES |
| THERMAL_SAMPLES | THERMAL_SAMPLES |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE | |
| google:registration_count | |
| google:registration_offset_x | |
| google:registration_offset_y | |
| google:registration_ratio |
TM
ID Aset
Ganti C01 dengan C02 di ID gambar dan koleksi. Misalnya,
Landsat 5 TM Tingkat 1:
| Koleksi 1 | Koleksi 2 |
|---|---|
| LANDSAT/LT05/C01/T1 | LANDSAT/LT05/C02/T1 |
Nama band
Perhatikan perubahan nama band dan penambahan band baru.
Perluas untuk melihat perubahan nama band dan penambahan band baru
| Deskripsi | Nama Koleksi 1 | Nama Koleksi 2 |
|---|---|---|
| Biru | B1 | B1 |
| Hijau | B2 | B2 |
| Merah | B3 | B3 |
| Inframerah dekat | B4 | B4 |
| Inframerah gelombang pendek 1 | B5 | B5 |
| Inframerah termal 1 | B6 | B6 |
| Inframerah gelombang pendek 2 | B7 | B7 |
| Bitmask QA | BQA | QA_PIXEL |
| Pengujian kualitas saturasi radiometrik | QA_RADSAT | |
| Sudut azimut matahari | SAA | |
| Sudut zenit matahari | SZA | |
| Melihat sudut azimut | VAA | |
| Melihat sudut zenit | VZA |
Perbarui kode yang memilih band yang namanya telah berubah, misalnya, band bitmask QA:
| Koleksi 1 | Koleksi 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
Penskalaan nilai
Tidak ada perubahan yang diperlukan. Koleksi 1 dan Koleksi 2 memiliki penskalaan yang sama untuk nilai termal dan pantulan DN mentah.
Penyamaran QA
Kode bit telah berubah untuk bitmask QA. Lihat bagian "Bitmask untuk QA_PIXEL" (Koleksi 2) dan "Bitmask untuk BQA" (Koleksi 1) dalam entri katalog untuk kode (misalnya, TM 5).
Ekspresi berikut membuat masker awan dan bayangan untuk gambar tertentu menggunakan kode bitmask QA Kumpulan Data 2.
Editor Kode (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
Properti gambar
Dalam transisi dari Koleksi 1 ke Koleksi 2, beberapa properti gambar ditambahkan dan beberapa dihapus. Tidak ada nama properti yang diubah. Lihat tabel perbandingan properti berikut untuk menentukan apakah Anda perlu mengubah kode untuk mengakomodasi properti yang tidak ada atau ditambahkan (misalnya, dalam pemfilteran atau pemrosesan). Lihat tab Properti Gambar di halaman katalog produk untuk deskripsi properti Koleksi 2 (misalnya, TM 5).
Luaskan untuk membandingkan daftar properti
| Koleksi 1 | Koleksi 2 |
|---|---|
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CORNER_LL_LAT_PRODUCT | |
| CORNER_LL_LON_PRODUCT | |
| CORNER_LL_PROJECTION_X_PRODUCT | |
| CORNER_LL_PROJECTION_Y_PRODUCT | |
| CORNER_LR_LAT_PRODUCT | |
| CORNER_LR_LON_PRODUCT | |
| CORNER_LR_PROJECTION_X_PRODUCT | |
| CORNER_LR_PROJECTION_Y_PRODUCT | |
| CORNER_UL_LAT_PRODUCT | |
| CORNER_UL_LON_PRODUCT | |
| CORNER_UL_PROJECTION_X_PRODUCT | |
| CORNER_UL_PROJECTION_Y_PRODUCT | |
| CORNER_UR_LAT_PRODUCT | |
| CORNER_UR_LON_PRODUCT | |
| CORNER_UR_PROJECTION_X_PRODUCT | |
| CORNER_UR_PROJECTION_Y_PRODUCT | |
| CORRECTION_BIAS_BAND_1 | CORRECTION_BIAS_BAND_1 |
| CORRECTION_BIAS_BAND_2 | CORRECTION_BIAS_BAND_2 |
| CORRECTION_BIAS_BAND_3 | CORRECTION_BIAS_BAND_3 |
| CORRECTION_BIAS_BAND_4 | CORRECTION_BIAS_BAND_4 |
| CORRECTION_BIAS_BAND_5 | CORRECTION_BIAS_BAND_5 |
| CORRECTION_BIAS_BAND_6 | CORRECTION_BIAS_BAND_6 |
| CORRECTION_BIAS_BAND_7 | CORRECTION_BIAS_BAND_7 |
| CORRECTION_GAIN_BAND_1 | CORRECTION_GAIN_BAND_1 |
| CORRECTION_GAIN_BAND_2 | CORRECTION_GAIN_BAND_2 |
| CORRECTION_GAIN_BAND_3 | CORRECTION_GAIN_BAND_3 |
| CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
| CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
| CORRECTION_GAIN_BAND_6 | CORRECTION_GAIN_BAND_6 |
| CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
| CPF_NAME | |
| DATA_CATEGORY | |
| DATA_SOURCE_ELEVATION | |
| DATA_TYPE | |
| DATA_TYPE_L0RP | DATA_TYPE_L0RP |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| EPHEMERIS_TYPE | EPHEMERIS_TYPE |
| FILE_DATE | |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
| GEOMETRIC_RMSE_VERIFY_QUAD_LL | GEOMETRIC_RMSE_VERIFY_QUAD_LL |
| GEOMETRIC_RMSE_VERIFY_QUAD_LR | GEOMETRIC_RMSE_VERIFY_QUAD_LR |
| GEOMETRIC_RMSE_VERIFY_QUAD_UL | GEOMETRIC_RMSE_VERIFY_QUAD_UL |
| GEOMETRIC_RMSE_VERIFY_QUAD_UR | GEOMETRIC_RMSE_VERIFY_QUAD_UR |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY | IMAGE_QUALITY |
| K1_CONSTANT_BAND_6 | K1_CONSTANT_BAND_6 |
| K2_CONSTANT_BAND_6 | K2_CONSTANT_BAND_6 |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| MAP_PROJECTION_L0RA | MAP_PROJECTION_L0RA |
| ORIENTASI | ORIENTASI |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
| RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
| RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_MAXIMUM_BAND_1 | |
| RADIANCE_MAXIMUM_BAND_2 | |
| RADIANCE_MAXIMUM_BAND_3 | |
| RADIANCE_MAXIMUM_BAND_4 | |
| RADIANCE_MAXIMUM_BAND_5 | |
| RADIANCE_MAXIMUM_BAND_6 | |
| RADIANCE_MAXIMUM_BAND_7 | |
| RADIANCE_MINIMUM_BAND_1 | |
| RADIANCE_MINIMUM_BAND_2 | |
| RADIANCE_MINIMUM_BAND_3 | |
| RADIANCE_MINIMUM_BAND_4 | |
| RADIANCE_MINIMUM_BAND_5 | |
| RADIANCE_MINIMUM_BAND_6 | |
| RADIANCE_MINIMUM_BAND_7 | |
| RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
| RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
| RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
| REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
| REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_MAXIMUM_BAND_1 | |
| REFLECTANCE_MAXIMUM_BAND_2 | |
| REFLECTANCE_MAXIMUM_BAND_3 | |
| REFLECTANCE_MAXIMUM_BAND_4 | |
| REFLECTANCE_MAXIMUM_BAND_5 | |
| REFLECTANCE_MAXIMUM_BAND_7 | |
| REFLECTANCE_MINIMUM_BAND_1 | |
| REFLECTANCE_MINIMUM_BAND_2 | |
| REFLECTANCE_MINIMUM_BAND_3 | |
| REFLECTANCE_MINIMUM_BAND_4 | |
| REFLECTANCE_MINIMUM_BAND_5 | |
| REFLECTANCE_MINIMUM_BAND_7 | |
| REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
| REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
| REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| SATURATION_BAND_1 | SATURATION_BAND_1 |
| SATURATION_BAND_2 | SATURATION_BAND_2 |
| SATURATION_BAND_3 | SATURATION_BAND_3 |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6 | SATURATION_BAND_6 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ANOMALIES | |
| SENSOR_ID | SENSOR_ID |
| SENSOR_MODE | SENSOR_MODE |
| SPACECRAFT_ID | SENSOR_MODE_SLC |
| STATION_ID | SPACECRAFT_ID |
| STATION_ID | |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| THERMAL_LINES | THERMAL_LINES |
| THERMAL_SAMPLES | THERMAL_SAMPLES |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE | |
| google:registration_count | |
| google:registration_offset_x | |
| google:registration_offset_y | |
| google:registration_ratio |
MSS
ID Aset
Ganti C01 dengan C02 di ID gambar dan koleksi. Misalnya,
Landsat 1 MSS Tingkat 1:
| Koleksi 1 | Koleksi 2 |
|---|---|
| LANDSAT/LM01/C01/T1 | LANDSAT/LM01/C02/T1 |
Nama band
Perhatikan perubahan nama band dan penambahan band baru.
Perluas untuk melihat perubahan nama band dan penambahan band baru
| Deskripsi | Nama Koleksi 1 | Nama Koleksi 2 |
|---|---|---|
| Hijau | B4 (MSS 1-3); B1 (MSS 4-5) | B4 (MSS 1-3); B1 (MSS 4-5) |
| Merah | B5 (MSS 1-3); B2 (MSS 4-5) | B5 (MSS 1-3); B2 (MSS 4-5) |
| Inframerah dekat 1 | B6 (MSS 1-3); B3 (MSS 4-5) | B6 (MSS 1-3); B3 (MSS 4-5) |
| Inframerah dekat 2 | B7 (MSS 1-3); B4 (MSS 4-5) | B7 (MSS 1-3); B4 (MSS 4-5) |
| Bitmask QA | BQA | QA_PIXEL |
| Pengujian kualitas saturasi radiometrik | QA_RADSAT |
Perbarui kode yang memilih band yang namanya telah berubah, misalnya, band bitmask QA:
| Koleksi 1 | Koleksi 2 |
|---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
Penskalaan nilai
Tidak ada perubahan yang diperlukan. Koleksi 1 dan Koleksi 2 memiliki penskalaan yang sama untuk nilai DN mentah.
Penyamaran QA
Kode bit telah berubah untuk bitmask QA. Lihat bagian "Bitmask untuk QA_PIXEL" (Koleksi 2) dan "Bitmask untuk BQA" (Koleksi 1) dalam entri katalog untuk kode (MSS 1, misalnya).
Ekspresi berikut membuat masker awan dan bayangan untuk gambar tertentu menggunakan kode bitmask QA Kumpulan Data 2.
Editor Kode (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
Properti gambar
Dalam transisi dari Koleksi 1 ke Koleksi 2, beberapa properti gambar ditambahkan dan beberapa dihapus. Tidak ada nama properti yang diubah. Lihat tabel perbandingan properti berikut untuk menentukan apakah Anda perlu mengubah kode untuk mengakomodasi properti yang tidak ada atau ditambahkan (misalnya, dalam pemfilteran atau pemrosesan). Lihat tab Properti Gambar di halaman katalog produk untuk deskripsi properti Koleksi 2 (misalnya, MSS 1).
Luaskan untuk membandingkan daftar properti
| Koleksi 1 | Koleksi 2 |
|---|---|
| CLOUD_COVER | CLOUD_COVER |
| CLOUD_COVER_LAND | CLOUD_COVER_LAND |
| COLLECTION_CATEGORY | COLLECTION_CATEGORY |
| COLLECTION_NUMBER | COLLECTION_NUMBER |
| CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
| CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
| CORRECTION_GAIN_BAND_6 | CORRECTION_GAIN_BAND_6 |
| CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
| CPF_NAME | |
| DATA_CATEGORY | |
| DATA_SOURCE_ELEVATION | |
| DATA_TYPE | |
| DATA_TYPE_L0RP | DATA_TYPE_L0RP |
| DATE_ACQUIRED | DATE_ACQUIRED |
| DATE_PRODUCT_GENERATED | |
| DATUM | DATUM |
| EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
| ELEVATION_SOURCE | |
| ELLIPSOID | ELLIPSOID |
| EPHEMERIS_TYPE | EPHEMERIS_TYPE |
| FILE_DATE | |
| GAIN_BAND_4 | GAIN_BAND_4 |
| GAIN_BAND_5 | GAIN_BAND_5 |
| GAIN_BAND_6 | GAIN_BAND_6 |
| GAIN_BAND_7 | GAIN_BAND_7 |
| GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
| GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
| GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
| GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
| GEOMETRIC_RMSE_VERIFY_QUAD_LL | GEOMETRIC_RMSE_VERIFY_QUAD_LL |
| GEOMETRIC_RMSE_VERIFY_QUAD_LR | GEOMETRIC_RMSE_VERIFY_QUAD_LR |
| GEOMETRIC_RMSE_VERIFY_QUAD_UL | GEOMETRIC_RMSE_VERIFY_QUAD_UL |
| GEOMETRIC_RMSE_VERIFY_QUAD_UR | GEOMETRIC_RMSE_VERIFY_QUAD_UR |
| GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
| GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
| GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
| GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
| IMAGE_QUALITY | IMAGE_QUALITY |
| LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
| LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
| MAP_PROJECTION | MAP_PROJECTION |
| MAP_PROJECTION_L0RA | MAP_PROJECTION_L0RA |
| ORIENTASI | ORIENTASI |
| PRESENT_BAND_4 | PRESENT_BAND_4 |
| PRESENT_BAND_5 | PRESENT_BAND_5 |
| PRESENT_BAND_6 | PRESENT_BAND_6 |
| PRESENT_BAND_7 | PRESENT_BAND_7 |
| PROCESSING_LEVEL | |
| PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
| RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
| RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
| RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
| RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
| RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
| RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
| RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
| RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
| REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
| REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
| REFLECTANCE_ADD_BAND_6 | REFLECTANCE_ADD_BAND_6 |
| REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
| REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
| REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
| REFLECTANCE_MULT_BAND_6 | REFLECTANCE_MULT_BAND_6 |
| REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
| REFLECTIVE_LINES | REFLECTIVE_LINES |
| REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
| REQUEST_ID | REQUEST_ID |
| RESAMPLING_OPTION | RESAMPLING_OPTION |
| SATURATION_BAND_4 | SATURATION_BAND_4 |
| SATURATION_BAND_5 | SATURATION_BAND_5 |
| SATURATION_BAND_6 | SATURATION_BAND_6 |
| SATURATION_BAND_7 | SATURATION_BAND_7 |
| SCENE_CENTER_TIME | SCENE_CENTER_TIME |
| SENSOR_ID | SENSOR_ID |
| SPACECRAFT_ID | SPACECRAFT_ID |
| STATION_ID | STATION_ID |
| SUN_AZIMUTH | SUN_AZIMUTH |
| SUN_ELEVATION | SUN_ELEVATION |
| UTM_ZONE | UTM_ZONE |
| WRS_PATH | WRS_PATH |
| WRS_ROW | WRS_ROW |
| WRS_TYPE |
Landsat Pre-Collection
Arsip data Earth Engine berisi data Landsat Pre-Collection. ID ini dapat diidentifikasi berdasarkan ID gambar dan koleksi yang tidak memiliki komponen koleksi.
- Koleksi 1 / Koleksi 2:
LANDSAT/[MISSION]/[COLLECTION]/[PRODUCT](misalnya,LANDSAT/LE07/C02/T1) - Pra-Pengumpulan:
LANDSAT/[MISSION]_[PRODUCT](misalnya,LANDSAT/LE7_L1T)
Jika Anda menggunakan data Pre-Collection, beralihlah ke Collection 2 sesegera mungkin. Gunakan informasi tentang Koleksi 2 di seluruh panduan ini untuk memperbarui skrip Anda.
Komposit temporal
Earth Engine menyediakan komposit temporal yang dikomputasi (8 hari, 32 hari, dan tahunan). Ada serangkaian perbedaan antara yang dihasilkan untuk Koleksi 1 dan pra-Koleksi (PC/C1) dan Koleksi 2 (C2). Kode yang digunakan untuk membuat komposit C2 dapat dilihat di GitHub.
Komposit reflektansi permukaan
Komposit C2 dihasilkan dari produk reflektansi permukaan L2 USGS, sedangkan komposit PC/C1 dibuat menggunakan reflektansi atas atmosfer.
Satu koleksi untuk semua instrumen
Komposit PC/C1 dipisahkan menjadi serangkaian komposit indeks temporal untuk setiap instrumen. Hal ini terutama disebabkan oleh perbedaan kalibrasi antar-instrumen. Dengan data reflektansi permukaan C2, interkalibrasi cukup untuk menggabungkan kedua instrumen.
Pemfilteran ketat
Pemfilteran yang lebih agresif untuk kualitas data diterapkan untuk komposit C2, termasuk:
- Membatasi L7 ke rentang 1999–2017 karena pergeseran orbit / waktu akuisisi adegan.
- Data L8 sebelum 1 Mei 2013 tidak disertakan karena masalah stabilitas orbit.
- Menghilangkan data dengan WRS_ROW ≥ 122 (tidak ada gambar malam).
- Menghilangkan piksel yang ditandai QA sebagai selain jelas.
- Menghilangkan piksel L4–L7 dengan ATMOS_OPACITY > 300 (kabut).
- Menghilangkan piksel L8–L9 dengan masalah QA_AEROSOL apa pun.
- Menghilangkan piksel yang ditandai sebagai jenuh atau yang memiliki nilai di luar batas.
Komposit median
Komposit PC/C1 menggunakan komposit terakhir di atas. Komposit Kumpulan 2 menggunakan komposer median.
Penamaan
Jalur komposit PC/C1 berbentuk
LANDSAT/INSTRUMENT/C01/T1_PERIOD_INDEX, sedangkan komposit C2 berbentukLANDSAT/COMPOSITES/C02/T1_L2_PERIOD_INDEX, dengan INSTRUMENT adalah salah satu dari LT04, LT05, LE07, atau LC08 dan PERIOD adalah salah satu dari 8DAY, 32DAY, atau ANNUAL. Sebagai contoh, tabel berikut menunjukkan jalur aset untuk komposit C2 yang kira-kira sesuai dengan komposit tahunan LC08 C1 untuk setiap INDEX. Ingatlah bahwa INSTRUMEN tidak disertakan dalam komposit C2 karena semua data yang relevan dari L4–L9 disertakan dalam setiap komposit.Koleksi 1 Koleksi 2 LANDSAT/LC08/C01/T1_ANNUAL_BAI LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_BAI LANDSAT/LC08/C01/T1_ANNUAL_EVI LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_EVI LANDSAT/LC08/C01/T1_ANNUAL_GREENEST_TOA LANDSAT/LC08/C01/T1_ANNUAL_NBRT LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_NBR LANDSAT/LC08/C01/T1_ANNUAL_NDSI Tidak dihasilkan karena piksel salju ditutupi selama proses penggabungan LANDSAT/LC08/C01/T1_ANNUAL_NDVI LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_NDVI LANDSAT/LC08/C01/T1_ANNUAL_NDWI LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_NDWI LANDSAT/LC08/C01/T1_ANNUAL_RAW LANDSAT/LC08/C01/T1_ANNUAL_TOA