ee.ImageCollection.select

Sélectionnez des bandes dans chaque image d'une collection.

Renvoie la collection d'images avec les bandes sélectionnées.

Utilisation	Renvoie
ImageCollection.select(selectors, names)	ImageCollection

Argument	Type	Détails
ceci : imagecollection	ImageCollection	Instance ImageCollection.
selectors	List<Object>	Liste de noms, d'expressions régulières ou d'index numériques spécifiant les bandes à sélectionner.
names	List<String>, facultatif	Liste des nouveaux noms des bandes de sortie. Doit correspondre au nombre de bandes sélectionnées.

Exemples

Éditeur de code (JavaScript)

// A Sentinel-2 surface reflectance image collection.
var col = ee.ImageCollection('COPERNICUS/S2_SR')
    .filterBounds(ee.Geometry.Point(-122.152, 37.336))
    .filterDate('2021-01-01', '2021-02-01');
print('All band names', col.first().bandNames());

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

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

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

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

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

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

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

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

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

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

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

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

Configuration de Python

Consultez la page Environnement Python pour en savoir plus sur l'API Python et sur l'utilisation de geemap pour le développement interactif.

import ee
import geemap.core as geemap

Colab (Python)

# A Sentinel-2 surface reflectance image collection.
col = ee.ImageCollection('COPERNICUS/S2_SR').filterBounds(
    ee.Geometry.Point(-122.152, 37.336)
    ).filterDate('2021-01-01', '2021-02-01')
print('All band names', col.first().bandNames().getInfo())

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

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

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

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

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

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

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

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

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

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

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

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