公告:所有在
2025 年 4 月 15 日之前注册使用 Earth Engine 的非商业项目都必须
验证是否符合非商业性质的资格条件,才能继续使用 Earth Engine。
ee.Geometry.Polygon.toGeoJSONString
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
返回几何图形的 GeoJSON 字符串表示形式。
用法 | 返回 |
---|
Polygon.toGeoJSONString() | 字符串 |
参数 | 类型 | 详细信息 |
---|
此:geometry | 几何图形 | Geometry 实例。 |
示例
代码编辑器 (JavaScript)
// Define a Polygon object.
var polygon = ee.Geometry.Polygon(
[[[-122.092, 37.424],
[-122.086, 37.418],
[-122.079, 37.425],
[-122.085, 37.423]]]);
// Apply the toGeoJSONString method to the Polygon object.
var polygonToGeoJSONString = polygon.toGeoJSONString();
// Print the result to the console.
print('polygon.toGeoJSONString(...) =', polygonToGeoJSONString);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(polygon,
{'color': 'black'},
'Geometry [black]: polygon');
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 Polygon object.
polygon = ee.Geometry.Polygon([[
[-122.092, 37.424],
[-122.086, 37.418],
[-122.079, 37.425],
[-122.085, 37.423],
]])
# Apply the toGeoJSONString method to the Polygon object.
polygon_to_geojson_string = polygon.toGeoJSONString()
# Print the result.
display('polygon.toGeoJSONString(...) =', polygon_to_geojson_string)
# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(polygon, {'color': 'black'}, 'Geometry [black]: polygon')
m
如未另行说明,那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可,并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情,请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC):2025-07-26。
[null,null,["最后更新时间 (UTC):2025-07-26。"],[[["\u003cp\u003e\u003ccode\u003etoGeoJSONString()\u003c/code\u003e returns a GeoJSON string representation of an Earth Engine Geometry object.\u003c/p\u003e\n"],["\u003cp\u003eThis method can be used with Polygon geometries to convert them to GeoJSON format.\u003c/p\u003e\n"],["\u003cp\u003eThe returned GeoJSON string can be used for interoperability with other geospatial tools and libraries.\u003c/p\u003e\n"],["\u003cp\u003eCode examples are provided in JavaScript and Python demonstrating how to use this method.\u003c/p\u003e\n"]]],["The `toGeoJSONString()` method converts a geometry object, specifically a Polygon in the provided examples, into its GeoJSON string representation. This method is applicable to a `Geometry` instance. Both JavaScript and Python code examples are provided. The examples create a polygon, apply `toGeoJSONString()`, print the resulting string, and then visualize the polygon on a map. The method's output is always a string.\n"],null,["# ee.Geometry.Polygon.toGeoJSONString\n\n\u003cbr /\u003e\n\nReturns a GeoJSON string representation of the geometry.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-----------------------------|---------|\n| Polygon.toGeoJSONString`()` | String |\n\n| Argument | Type | Details |\n|------------------|----------|------------------------|\n| this: `geometry` | Geometry | The Geometry instance. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Define a Polygon object.\nvar polygon = ee.Geometry.Polygon(\n [[[-122.092, 37.424],\n [-122.086, 37.418],\n [-122.079, 37.425],\n [-122.085, 37.423]]]);\n\n// Apply the toGeoJSONString method to the Polygon object.\nvar polygonToGeoJSONString = polygon.toGeoJSONString();\n\n// Print the result to the console.\nprint('polygon.toGeoJSONString(...) =', polygonToGeoJSONString);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(polygon,\n {'color': 'black'},\n 'Geometry [black]: polygon');\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\n# Define a Polygon object.\npolygon = ee.Geometry.Polygon([[\n [-122.092, 37.424],\n [-122.086, 37.418],\n [-122.079, 37.425],\n [-122.085, 37.423],\n]])\n\n# Apply the toGeoJSONString method to the Polygon object.\npolygon_to_geojson_string = polygon.toGeoJSONString()\n\n# Print the result.\ndisplay('polygon.toGeoJSONString(...) =', polygon_to_geojson_string)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(polygon, {'color': 'black'}, 'Geometry [black]: polygon')\nm\n```"]]