ee.Geometry.LinearRing.symmetricDifference

返回两个几何图形之间的对称差。

用法	返回
LinearRing.symmetricDifference(right, maxError, proj)	几何图形

参数	类型	详细信息
此：left	几何图形	用作运算左操作数的几何图形。
right	几何图形	用作相应运算的右操作数的几何图形。
maxError	ErrorMargin，默认值：null	执行任何必要的重新投影时可容忍的最大误差量。
proj	投影，默认值：null	执行操作的投影。如果未指定，则操作将在球面坐标系中执行，并且球面上的直线距离将以米为单位。

示例

代码编辑器 (JavaScript)

// Define a LinearRing object.
var linearRing = ee.Geometry.LinearRing(
    [[-122.091, 37.420],
     [-122.085, 37.422],
     [-122.080, 37.430]]);

// Define other inputs.
var inputGeom = ee.Geometry.BBox(-122.085, 37.415, -122.075, 37.425);

// Apply the symmetricDifference method to the LinearRing object.
var linearRingSymmetricDifference = linearRing.symmetricDifference({'right': inputGeom, 'maxError': 1});

// Print the result to the console.
print('linearRing.symmetricDifference(...) =', linearRingSymmetricDifference);

// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(linearRing,
             {'color': 'black'},
             'Geometry [black]: linearRing');
Map.addLayer(inputGeom,
             {'color': 'blue'},
             'Parameter [blue]: inputGeom');
Map.addLayer(linearRingSymmetricDifference,
             {'color': 'red'},
             'Result [red]: linearRing.symmetricDifference');

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)

# Define a LinearRing object.
linearring = ee.Geometry.LinearRing(
    [[-122.091, 37.420], [-122.085, 37.422], [-122.080, 37.430]]
)

# Define other inputs.
input_geom = ee.Geometry.BBox(-122.085, 37.415, -122.075, 37.425)

# Apply the symmetricDifference method to the LinearRing object.
linearring_symmetric_difference = linearring.symmetricDifference(
    right=input_geom, maxError=1
)

# Print the result.
display(
    'linearring.symmetricDifference(...) =', linearring_symmetric_difference
)

# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(linearring, {'color': 'black'}, 'Geometry [black]: linearring')
m.add_layer(input_geom, {'color': 'blue'}, 'Parameter [blue]: input_geom')
m.add_layer(
    linearring_symmetric_difference,
    {'color': 'red'},
    'Result [red]: linearring.symmetricDifference',
)
m