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ee.Geometry.LineString.projection
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。
返回几何图形的投影。
| 用法 | 返回 |
|---|
LineString.projection() | 投影 |
示例
代码编辑器 (JavaScript)
// Define a LineString object.
var lineString = ee.Geometry.LineString([[-122.09, 37.42], [-122.08, 37.43]]);
// Apply the projection method to the LineString object.
var lineStringProjection = lineString.projection();
// Print the result to the console.
print('lineString.projection(...) =', lineStringProjection);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(lineString,
{'color': 'black'},
'Geometry [black]: lineString');
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 LineString object.
linestring = ee.Geometry.LineString([[-122.09, 37.42], [-122.08, 37.43]])
# Apply the projection method to the LineString object.
linestring_projection = linestring.projection()
# Print the result.
display('linestring.projection(...) =', linestring_projection)
# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(linestring, {'color': 'black'}, 'Geometry [black]: linestring')
m
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最后更新时间 (UTC)：2025-07-26。
[null,null,["最后更新时间 (UTC)：2025-07-26。"],[[["\u003cp\u003eThe \u003ccode\u003eprojection()\u003c/code\u003e method retrieves the projection of a given geometry, such as a LineString.\u003c/p\u003e\n"],["\u003cp\u003eIt takes a geometry object as input and returns a Projection object representing its projection.\u003c/p\u003e\n"],["\u003cp\u003eThis method is useful for understanding the coordinate system and projection information associated with a geometry.\u003c/p\u003e\n"],["\u003cp\u003eExamples are provided in JavaScript and Python demonstrating how to use the \u003ccode\u003eprojection()\u003c/code\u003e method with a LineString geometry and display it on a map.\u003c/p\u003e\n"]]],["The `projection()` method is applied to a geometry object, specifically demonstrated with a `LineString`. This method returns the projection of the geometry. In the examples provided, a `LineString` is defined, and the `.projection()` method is called upon it. The resulting projection is then printed. Geometries are also displayed on a map, with the `LineString` shown in black. This process can be applied using javascript or python.\n"],null,["# ee.Geometry.LineString.projection\n\nReturns the projection of the geometry.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|---------------------------|------------|\n| LineString.projection`()` | Projection |\n\n| Argument | Type | Details |\n|------------------|----------|---------|\n| this: `geometry` | Geometry | |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Define a LineString object.\nvar lineString = ee.Geometry.LineString([[-122.09, 37.42], [-122.08, 37.43]]);\n\n// Apply the projection method to the LineString object.\nvar lineStringProjection = lineString.projection();\n\n// Print the result to the console.\nprint('lineString.projection(...) =', lineStringProjection);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(lineString,\n {'color': 'black'},\n 'Geometry [black]: lineString');\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 LineString object.\nlinestring = ee.Geometry.LineString([[-122.09, 37.42], [-122.08, 37.43]])\n\n# Apply the projection method to the LineString object.\nlinestring_projection = linestring.projection()\n\n# Print the result.\ndisplay('linestring.projection(...) =', linestring_projection)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(linestring, {'color': 'black'}, 'Geometry [black]: linestring')\nm\n```"]]
