Resim bilgileri ve meta verileri

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Bant adlarını, projeksiyon bilgilerini, özellikleri ve diğer meta verileri keşfetmek için resim nesnelerini yazdırın. Aşağıdaki örneklerde, resim meta verisi grubunun tamamının yazdırılmasının yanı sıra belirli meta veri öğelerinin programatik olarak istenmesi gösterilmektedir.

Meta verileri alma

Kod Düzenleyici (JavaScript)

// Load an image.
var image = ee.Image('LANDSAT/LC08/C02/T1/LC08_044034_20140318');

// Display all metadata.
print('All metadata:', image);

// Get information about the bands as a list.
var bandNames = image.bandNames();
print('Band names:', bandNames);  // ee.List of band names

// Get projection information from band 1.
var b1proj = image.select('B1').projection();
print('Band 1 projection:', b1proj);  // ee.Projection object

// Get scale (in meters) information from band 1.
var b1scale = image.select('B1').projection().nominalScale();
print('Band 1 scale:', b1scale);  // ee.Number

// Note that different bands can have different projections and scale.
var b8scale = image.select('B8').projection().nominalScale();
print('Band 8 scale:', b8scale);  // ee.Number

// Get a list of all metadata properties.
var properties = image.propertyNames();
print('Metadata properties:', properties);  // ee.List of metadata properties

// Get a specific metadata property.
var cloudiness = image.get('CLOUD_COVER');
print('CLOUD_COVER:', cloudiness);  // ee.Number

// Get version number (ingestion timestamp as microseconds since Unix epoch).
var version = image.get('system:version');
print('Version:', version);  // ee.Number
print('Version (as ingestion date):',
      ee.Date(ee.Number(version).divide(1000)));  // ee.Date

// Get the timestamp and convert it to a date.
var date = ee.Date(image.get('system:time_start'));
print('Timestamp:', date);  // ee.Date

Python kurulumu

Python API'si ve etkileşimli geliştirme için geemap kullanımı hakkında bilgi edinmek üzere Python Ortamı sayfasına bakın.

import ee
import geemap.core as geemap

Colab (Python)

# Load an image.
image = ee.Image('LANDSAT/LC08/C02/T1/LC08_044034_20140318')

# All metadata.
display('All metadata:', image)

# Get information about the bands as a list.
band_names = image.bandNames()
display('Band names:', band_names)  # ee.List of band names

# Get projection information from band 1.
b1_proj = image.select('B1').projection()
display('Band 1 projection:', b1_proj)  # ee.Projection object

# Get scale (in meters) information from band 1.
b1_scale = image.select('B1').projection().nominalScale()
display('Band 1 scale:', b1_scale)  # ee.Number

# Note that different bands can have different projections and scale.
b8_scale = image.select('B8').projection().nominalScale()
display('Band 8 scale:', b8_scale)  # ee.Number

# Get a list of all metadata properties.
properties = image.propertyNames()
display('Metadata properties:', properties)  # ee.List of metadata properties

# Get a specific metadata property.
cloudiness = image.get('CLOUD_COVER')
display('CLOUD_COVER:', cloudiness)  # ee.Number

# Get version number (ingestion timestamp as microseconds since Unix epoch).
version = image.get('system:version')
display('Version:', version)  # ee.Number
display(
    'Version (as ingestion date):',
    ee.Date(ee.Number(version).divide(1000)).format(),
)  # ee.Date

# Get the timestamp.
ee_date = ee.Date(image.get('system:time_start'))
display('Timestamp:', ee_date)  # ee.Date

# Date objects transferred to the client are milliseconds since UNIX epoch;
# convert to human readable date with ee.Date.format().
display('Datetime:', ee_date.format())  # ISO standard date string