ee.Image.select

Resimdeki bantları seçer.

Seçilen bantları içeren bir resim döndürür.

Kullanım	İadeler
Image.select(var_args)	Resim

Bağımsız Değişken	Tür	Ayrıntılar
bu: image	Resim	Image örneği.
var_args	VarArgs<Object>	İki olasılıktan biri: Liste dışı bağımsız değişkenlerin sayısı. Bunların tümü bant seçici olarak yorumlanır. Bunlar grup adları, normal ifadeler veya sayısal dizinler olabilir. Ör. selected = image.select('a', 'b', 3, 'd'); İki liste. Birincisi bant seçiciler, ikincisi ise seçilen bantlar için yeni adlar olarak kullanılır. Yeni ad sayısı, seçilen bant sayısıyla eşleşmelidir. Ör. selected = image.select(['a', 4], ['newA', 'newB']);

Örnekler

Kod Düzenleyici (JavaScript)

// A Sentinel-2 surface reflectance image.
var img = ee.Image('COPERNICUS/S2_SR/20210109T185751_20210109T185931_T10SEG');
print('All band names', img.bandNames());

print('Select a band by name',
      img.select('B11').bandNames());

print('Select a band by index',
      img.select(10).bandNames());

print('Select bands using a list',
      img.select(['B11', 'B8', 'B3']).bandNames());

print('Select bands by an argument series',
      img.select('B11', 'B8', 'B3').bandNames());

print('Mixing string and integer selectors is valid',
      img.select(10, 'B8', 2).bandNames());

print('Rename selected bands using two corresponding lists',
      img.select(['B11', 'B8', 'B3'], ['SWIR1', 'NIR', 'Green']).bandNames());

// Use regular expressions to select bands.
print('Match "QA" followed by any two characters',
      img.select('QA..').bandNames());

print('Match "B" followed by any character, any number of times',
      img.select('B.*').bandNames());

print('Match "B" followed by any character, and any optional third character',
      img.select('B..?').bandNames());

print('Match "B" followed by a character in the range 6-8',
      img.select('B[6-8]').bandNames());

print('Match "B" followed by a character in the range 1-9 and then 1-2',
      img.select('B[1-9][1-2]').bandNames());

print('Match "B" or "QA" each followed by any character, any number of times.',
      img.select('B.*|QA.*').bandNames());

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)

# A Sentinel-2 surface reflectance image.
img = ee.Image('COPERNICUS/S2_SR/20210109T185751_20210109T185931_T10SEG')
print('All band names:', img.bandNames().getInfo())

print('Select a band by name:', img.select('B11').bandNames().getInfo())

print('Select a band by index:', img.select(10).bandNames().getInfo())

print('Select bands using a list:',
      img.select(['B11', 'B8', 'B3']).bandNames().getInfo())

print('Select bands by an argument series:',
      img.select('B11', 'B8', 'B3').bandNames().getInfo())

print('Mixing string and integer selectors is valid:',
      img.select(10, 'B8', 2).bandNames().getInfo())

print('Rename selected bands using two corresponding lists:',
      img.select(['B11', 'B8', 'B3'], ['SWIR1', 'NIR', 'Green'])
      .bandNames().getInfo())

# Use regular expressions to select bands.
print('Match "QA" followed by any two characters:',
      img.select('QA..').bandNames().getInfo())

print('Match "B" followed by any character, any number of times:',
      img.select('B.*').bandNames().getInfo())

print('Match "B" followed by any character, and any optional third character',
      img.select('B..?').bandNames().getInfo())

print('Match "B" followed by a character in the range 6-8',
      img.select('B[6-8]').bandNames().getInfo())

print('Match "B" followed by a character in the range 1-9 and then 1-2',
      img.select('B[1-9][1-2]').bandNames().getInfo())

print('Match "B" or "QA" each followed by any character, any number of times.',
      img.select('B.*|QA.*').bandNames().getInfo())