ee.FeatureCollection.set

覆寫 Element 的一或多個中繼資料屬性。

傳回覆寫指定屬性的元素。

用量	傳回
FeatureCollection.set(var_args)	元素

引數	類型	詳細資料
this: element	元素	Element 執行個體。
var_args	VarArgs[Object]	屬性字典或屬性的 vararg 序列，例如 key1、value1、key2、value2...

範例

程式碼編輯器 (JavaScript)

// An empty FeatureCollection for simple demonstration.
var fc = ee.FeatureCollection([]);

// Set a single new property using a key-value pair.
fc = fc.set('key_1', 'value 1');

// Set multiple new properties using a series of key-value pairs.
fc = fc.set('key_2', 'value 2',
            'key_3', 3);

// Set new properties using a dictionary of key-value pairs.
fc = fc.set({
  key_5: ee.Array([1, 2, 3]),
  key_6: ee.Image(0),
  key_7: ee.Feature(null)
});
print('New FeatureCollection properties added', fc);

// Overwrite an existing property.
fc = fc.set('key_1', 'overwritten');
print('FeatureCollection property overwritten', fc);

Python 設定

請參閱 Python 環境頁面，瞭解 Python API 和如何使用 geemap 進行互動式開發。

import ee
import geemap.core as geemap

Colab (Python)

# An empty FeatureCollection for simple demonstration.
fc = ee.FeatureCollection([])

# Set a single new property using a key-value pair.
fc = fc.set('key_1', 'value 1')

# Set multiple new properties using a series of key-value pairs.
fc = fc.set('key_2', 'value 2', 'key_3', 3)

# Set new properties using a dictionary of key-value pairs.
fc = fc.set({
  'key_5': ee.Array([1, 2, 3]),
  'key_6': ee.Image(0),
  'key_7': ee.Feature(None)
})
display('New FeatureCollection properties added:', fc)

# Overwrite an existing property.
fc = fc.set('key_1', 'overwritten')
display('FeatureCollection property overwritten:', fc)