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ee.Image.select
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Выбирает полосы на изображении.
Возвращает изображение с выбранными полосами.
Использование | Возвраты | Image. select (var_args) | Изображение |
Аргумент | Тип | Подробности | это: image | Изображение | Экземпляр изображения. |
var_args | VarArgs<Объект> | Один из двух вариантов:- Любое количество несписковых аргументов. Все они будут интерпретироваться как селекторы полос. Это могут быть имена полос, регулярные выражения или числовые индексы. Например, selected = image.select('a', 'b', 3, 'd');
- Два списка. Первый будет использоваться как селекторы полос, а второй как новые имена для выбранных полос. Количество новых имен должно соответствовать количеству выбранных полос. Например, selected = image.select(['a', 4], ['newA', 'newB']);
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Примеры
Редактор кода (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());
Настройка Python
Информацию об API Python и использовании geemap
для интерактивной разработки см. на странице Python Environment .
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())
Если не указано иное, контент на этой странице предоставляется по лицензии Creative Commons "С указанием авторства 4.0", а примеры кода – по лицензии Apache 2.0. Подробнее об этом написано в правилах сайта. Java – это зарегистрированный товарный знак корпорации Oracle и ее аффилированных лиц.
Последнее обновление: 2025-07-24 UTC.
[null,null,["Последнее обновление: 2025-07-24 UTC."],[[["\u003cp\u003e\u003ccode\u003eImage.select()\u003c/code\u003e is used to select specific bands from an image by their name, index, or using regular expressions.\u003c/p\u003e\n"],["\u003cp\u003eYou can provide band selectors as individual arguments, a single list, or two lists (one for selectors and one for new band names).\u003c/p\u003e\n"],["\u003cp\u003eThis method returns a new image containing only the selected bands, potentially with renamed bands if specified.\u003c/p\u003e\n"],["\u003cp\u003eRegular expressions provide a powerful way to select multiple bands matching a pattern.\u003c/p\u003e\n"]]],[],null,["# ee.Image.select\n\n\u003cbr /\u003e\n\nSelects bands from an image.\n\n\u003cbr /\u003e\n\nReturns an image with the selected bands.\n\n| Usage | Returns |\n|--------------------------|---------|\n| Image.select`(var_args)` | Image |\n\n| Argument | Type | Details |\n|---------------|-------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| this: `image` | Image | The Image instance. |\n| `var_args` | VarArgs\\\u003cObject\\\u003e | One of two possibilities: - Any number of non-list arguments. All of these will be interpreted as band selectors. These can be band names, regexes, or numeric indices. E.g. selected = image.select('a', 'b', 3, 'd'); - Two lists. The first will be used as band selectors and the second as new names for the selected bands. The number of new names must match the number of selected bands. E.g. selected = image.select(\\['a', 4\\], \\['newA', 'newB'\\]); |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// A Sentinel-2 surface reflectance image.\nvar img = ee.Image('COPERNICUS/S2_SR/20210109T185751_20210109T185931_T10SEG');\nprint('All band names', img.bandNames());\n\nprint('Select a band by name',\n img.select('B11').bandNames());\n\nprint('Select a band by index',\n img.select(10).bandNames());\n\nprint('Select bands using a list',\n img.select(['B11', 'B8', 'B3']).bandNames());\n\nprint('Select bands by an argument series',\n img.select('B11', 'B8', 'B3').bandNames());\n\nprint('Mixing string and integer selectors is valid',\n img.select(10, 'B8', 2).bandNames());\n\nprint('Rename selected bands using two corresponding lists',\n img.select(['B11', 'B8', 'B3'], ['SWIR1', 'NIR', 'Green']).bandNames());\n\n// Use regular expressions to select bands.\nprint('Match \"QA\" followed by any two characters',\n img.select('QA..').bandNames());\n\nprint('Match \"B\" followed by any character, any number of times',\n img.select('B.*').bandNames());\n\nprint('Match \"B\" followed by any character, and any optional third character',\n img.select('B..?').bandNames());\n\nprint('Match \"B\" followed by a character in the range 6-8',\n img.select('B[6-8]').bandNames());\n\nprint('Match \"B\" followed by a character in the range 1-9 and then 1-2',\n img.select('B[1-9][1-2]').bandNames());\n\nprint('Match \"B\" or \"QA\" each followed by any character, any number of times.',\n img.select('B.*|QA.*').bandNames());\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\n# A Sentinel-2 surface reflectance image.\nimg = ee.Image('COPERNICUS/S2_SR/20210109T185751_20210109T185931_T10SEG')\nprint('All band names:', img.bandNames().getInfo())\n\nprint('Select a band by name:', img.select('B11').bandNames().getInfo())\n\nprint('Select a band by index:', img.select(10).bandNames().getInfo())\n\nprint('Select bands using a list:',\n img.select(['B11', 'B8', 'B3']).bandNames().getInfo())\n\nprint('Select bands by an argument series:',\n img.select('B11', 'B8', 'B3').bandNames().getInfo())\n\nprint('Mixing string and integer selectors is valid:',\n img.select(10, 'B8', 2).bandNames().getInfo())\n\nprint('Rename selected bands using two corresponding lists:',\n img.select(['B11', 'B8', 'B3'], ['SWIR1', 'NIR', 'Green'])\n .bandNames().getInfo())\n\n# Use regular expressions to select bands.\nprint('Match \"QA\" followed by any two characters:',\n img.select('QA..').bandNames().getInfo())\n\nprint('Match \"B\" followed by any character, any number of times:',\n img.select('B.*').bandNames().getInfo())\n\nprint('Match \"B\" followed by any character, and any optional third character',\n img.select('B..?').bandNames().getInfo())\n\nprint('Match \"B\" followed by a character in the range 6-8',\n img.select('B[6-8]').bandNames().getInfo())\n\nprint('Match \"B\" followed by a character in the range 1-9 and then 1-2',\n img.select('B[1-9][1-2]').bandNames().getInfo())\n\nprint('Match \"B\" or \"QA\" each followed by any character, any number of times.',\n img.select('B.*|QA.*').bandNames().getInfo())\n```"]]