Duyuru:
15 Nisan 2025'ten önce Earth Engine'i kullanmak için kaydedilen tüm ticari olmayan projelerin Earth Engine erişimini sürdürmek için
ticari olmayan uygunluğu doğrulaması gerekir.
ee.List.get
Koleksiyonlar ile düzeninizi koruyun
İçeriği tercihlerinize göre kaydedin ve kategorilere ayırın.
Listedeki belirtilen konumdaki öğeyi döndürür. Negatif bir dizin, listenin sonundan geriye doğru sayar.
Kullanım | İadeler |
---|
List.get(index) | Nesne |
Bağımsız Değişken | Tür | Ayrıntılar |
---|
bu: list | Liste | |
index | Tamsayı | |
Örnekler
Kod Düzenleyici (JavaScript)
// An ee.List object.
var list = ee.List([5, 10, 15, 20, 25, 30]);
// Fetch elements at specified 0-based positions in the list.
print('The second element', list.get(1));
print('The fourth element', list.get(3));
print('The last element', list.get(-1));
print('The second to last element', list.get(-2));
// ee.Number and integer computed objects are valid inputs.
print('Computed object index input', list.get(list.get(0)));
// The result of ee.List.get is an ambiguous object type. You need to cast the
// result to the expected type to use it in subsequent instance methods. For
// example, if you are fetching a number and wish to add it to another number,
// you must cast the .get() result as an ee.Number.
print('Add fetched number to another number', ee.Number(list.get(1)).add(2));
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)
# An ee.List object.
ee_list = ee.List([5, 10, 15, 20, 25, 30])
# Fetch elements at specified 0-based positions in the list.
print('The second element:', ee_list.get(1).getInfo())
print('The fourth element:', ee_list.get(3).getInfo())
print('The last element:', ee_list.get(-1).getInfo())
print('The second to last element:', ee_list.get(-2).getInfo())
# ee.Number and integer computed objects are valid inputs.
print('Computed object index input:', ee_list.get(list.get(0)).getInfo())
# The result of ee.List.get is an ambiguous object type. You need to cast the
# result to the expected type to use it in subsequent instance methods. For
# example, if you are fetching a number and wish to add it to another number,
# you must cast the .get() result as an ee.Number.
print('Add fetched number to another number:',
ee.Number(list.get(1)).add(2).getInfo())
Aksi belirtilmediği sürece bu sayfanın içeriği Creative Commons Atıf 4.0 Lisansı altında ve kod örnekleri Apache 2.0 Lisansı altında lisanslanmıştır. Ayrıntılı bilgi için Google Developers Site Politikaları'na göz atın. Java, Oracle ve/veya satış ortaklarının tescilli ticari markasıdır.
Son güncelleme tarihi: 2025-07-26 UTC.
[null,null,["Son güncelleme tarihi: 2025-07-26 UTC."],[[["\u003cp\u003e\u003ccode\u003eList.get()\u003c/code\u003e retrieves an element from an Earth Engine List object at a specified index.\u003c/p\u003e\n"],["\u003cp\u003eNegative index values can be used to access elements from the end of the list, with -1 representing the last element.\u003c/p\u003e\n"],["\u003cp\u003eThe returned element's type is ambiguous and might require explicit casting to a specific Earth Engine type for further operations (e.g., converting to ee.Number to perform calculations).\u003c/p\u003e\n"],["\u003cp\u003eInput indices can be integers, ee.Number objects, or other computed objects that evaluate to an integer.\u003c/p\u003e\n"]]],[],null,["# ee.List.get\n\nReturns the element at the specified position in list. A negative index counts backwards from the end of the list.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-------------------|---------|\n| List.get`(index)` | Object |\n\n| Argument | Type | Details |\n|--------------|---------|---------|\n| this: `list` | List | |\n| `index` | Integer | |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// An ee.List object.\nvar list = ee.List([5, 10, 15, 20, 25, 30]);\n\n// Fetch elements at specified 0-based positions in the list.\nprint('The second element', list.get(1));\nprint('The fourth element', list.get(3));\nprint('The last element', list.get(-1));\nprint('The second to last element', list.get(-2));\n\n// ee.Number and integer computed objects are valid inputs.\nprint('Computed object index input', list.get(list.get(0)));\n\n// The result of ee.List.get is an ambiguous object type. You need to cast the\n// result to the expected type to use it in subsequent instance methods. For\n// example, if you are fetching a number and wish to add it to another number,\n// you must cast the .get() result as an ee.Number.\nprint('Add fetched number to another number', ee.Number(list.get(1)).add(2));\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# An ee.List object.\nee_list = ee.List([5, 10, 15, 20, 25, 30])\n\n# Fetch elements at specified 0-based positions in the list.\nprint('The second element:', ee_list.get(1).getInfo())\nprint('The fourth element:', ee_list.get(3).getInfo())\nprint('The last element:', ee_list.get(-1).getInfo())\nprint('The second to last element:', ee_list.get(-2).getInfo())\n\n# ee.Number and integer computed objects are valid inputs.\nprint('Computed object index input:', ee_list.get(list.get(0)).getInfo())\n\n# The result of ee.List.get is an ambiguous object type. You need to cast the\n# result to the expected type to use it in subsequent instance methods. For\n# example, if you are fetching a number and wish to add it to another number,\n# you must cast the .get() result as an ee.Number.\nprint('Add fetched number to another number:',\n ee.Number(list.get(1)).add(2).getInfo())\n```"]]