ee.Geometry.MultiPoint.symmetricDifference

傳回兩個幾何圖形的對稱差。

用量	傳回
MultiPoint.symmetricDifference(right, maxError, proj)	幾何圖形

引數	類型	詳細資料
這個：left	幾何圖形	做為運算左運算元的幾何圖形。
right	幾何圖形	用做運算右運算元的幾何圖形。
maxError	ErrorMargin，預設值：null	執行任何必要重投影時可容許的最大誤差量。
proj	投影，預設值：null	執行作業的投影。如未指定，系統會以球面座標系統執行作業，而球面上的線性距離會以公尺為單位。

範例

程式碼編輯器 (JavaScript)

// Define a MultiPoint object.
var multiPoint = ee.Geometry.MultiPoint([[-122.082, 37.420], [-122.081, 37.426]]);

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

// Apply the symmetricDifference method to the MultiPoint object.
var multiPointSymmetricDifference = multiPoint.symmetricDifference({'right': inputGeom, 'maxError': 1});

// Print the result to the console.
print('multiPoint.symmetricDifference(...) =', multiPointSymmetricDifference);

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

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)

# Define a MultiPoint object.
multipoint = ee.Geometry.MultiPoint([[-122.082, 37.420], [-122.081, 37.426]])

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

# Apply the symmetricDifference method to the MultiPoint object.
multipoint_symmetric_difference = multipoint.symmetricDifference(
    right=input_geom, maxError=1
)

# Print the result.
display(
    'multipoint.symmetricDifference(...) =', multipoint_symmetric_difference
)

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