ee.Geometry.LinearRing.dissolve

返回几何图形的并集。这会使单个几何图形保持不变，并合并多个几何图形。

用法返回
LinearRing.dissolve(maxError, proj)几何图形
参数类型详细信息
此：geometry几何图形要进行并集的几何图形。
maxErrorErrorMargin，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如果指定，则在此投影中执行并集。否则，将在球面坐标系中执行。

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]]);

// Apply the dissolve method to the LinearRing object.
var linearRingDissolve = linearRing.dissolve({'maxError': 1});

// Print the result to the console.
print('linearRing.dissolve(...) =', linearRingDissolve);

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

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]]
)

# Apply the dissolve method to the LinearRing object.
linearring_dissolve = linearring.dissolve(maxError=1)

# Print the result.
display('linearring.dissolve(...) =', linearring_dissolve)

# 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(
    linearring_dissolve, {'color': 'red'}, 'Result [red]: linearring.dissolve'
)
m