ee.FeatureCollection.copyProperties

将元数据属性从一个元素复制到另一个元素。

用法返回
FeatureCollection.copyProperties(source, properties, exclude)元素
参数类型详细信息
此：destination元素，默认值：null要替换其属性的对象。
source元素，默认值：null要从中复制属性的对象。
properties列表，默认值：null要复制的属性。如果省略，则会复制所有常规（即非系统）属性。
exclude列表，默认值：null复制所有属性时要排除的属性列表。如果指定了 properties，则不得指定此参数。

示例

代码编辑器 (JavaScript)

// Import a Landsat 8 surface reflectance image to sample.
var image = ee.Image('LANDSAT/LC08/C02/T1_L2/LC08_038032_20170722')
                // Select the optical bands.
                .select(['SR_B.']);

// Get the image geometry to define the geographical bounds of the sample.
var imageBounds = image.geometry();

// Sample the image at a set of random points; a feature collection is returned.
var pointSampleFc = image.sample(
    {region: imageBounds, scale: 30, numPixels: 5, geometries: true});

// Copy image properties to the FeatureCollection; three options follow.
print('All non-system image properties copied to the FeatureCollection',
      pointSampleFc.copyProperties(image));

print('Selected image properties copied to the FeatureCollection',
      pointSampleFc.copyProperties({
        source: image,
        properties: ['system:time_start', 'SPACECRAFT_ID']
      }));

print('All but selected image properties copied to the FeatureCollection',
      pointSampleFc.copyProperties({
        source: image,
        exclude: ['TIRS_SSM_MODEL', 'TIRS_SSM_POSITION_STATUS']
      }));

Python 设置

如需了解 Python API 和如何使用 geemap 进行交互式开发，请参阅 Python 环境页面。

import ee
import geemap.core as geemap

Colab (Python)

# Import a Landsat 8 surface reflectance image to sample.
image = ee.Image('LANDSAT/LC08/C02/T1_L2/LC08_038032_20170722').select(
    # Select the optical bands.
    ['SR_B.'])

# Get the image geometry to define the geographical bounds of the sample.
image_bounds = image.geometry()

# Sample the image at a set of random points; a feature collection is returned.
point_sample_fc = image.sample(
    **{'region': image_bounds, 'scale': 30, 'numPixels': 5, 'geometries': True})

# Copy image properties to the FeatureCollection; three options follow.
print('All non-system image properties copied to the FeatureCollection:',
      point_sample_fc.copyProperties(image).getInfo())

print('Selected image properties copied to the FeatureCollection:',
      point_sample_fc.copyProperties(**{
          'source': image,
          'properties': ['system:time_start', 'SPACECRAFT_ID']
          }).getInfo())

print('All but selected image properties copied to the FeatureCollection:',
      point_sample_fc.copyProperties(**{
          'source': image,
          'exclude': ['TIRS_SSM_MODEL', 'TIRS_SSM_POSITION_STATUS']
      }).getInfo())