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.LineString.isUnbounded
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。
返回几何图形是否无界。
| 用法 | 返回 |
|---|
LineString.isUnbounded() | 布尔值 |
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 isUnbounded method to the LineString object.
var lineStringIsUnbounded = lineString.isUnbounded();
// Print the result to the console.
print('lineString.isUnbounded(...) =', lineStringIsUnbounded);
// 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 isUnbounded method to the LineString object.
linestring_is_unbounded = linestring.isUnbounded()
# Print the result.
display('linestring.isUnbounded(...) =', linestring_is_unbounded)
# 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
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\u003eThe \u003ccode\u003eisUnbounded()\u003c/code\u003e method determines if a geometry is unbounded and returns a boolean value (true if unbounded, false if bounded).\u003c/p\u003e\n"],["\u003cp\u003eThis method is applicable to Geometry objects, specifically demonstrated with LineString in the provided examples.\u003c/p\u003e\n"],["\u003cp\u003eUsage involves calling \u003ccode\u003eisUnbounded()\u003c/code\u003e on a Geometry object, such as \u003ccode\u003elineString.isUnbounded()\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eCode examples are provided in JavaScript and Python to illustrate the usage and output of the method.\u003c/p\u003e\n"]]],["The `isUnbounded()` method checks if a geometry is unbounded, returning a Boolean value. This method is used with a `LineString` geometry object. In JavaScript and Python examples, a `LineString` is defined and the `isUnbounded()` method is applied to it. The result (Boolean) is then printed, and the geometry is displayed on a map. The `isUnbounded()` function does not have any argument other than the geometry object itself.\n"],null,["# ee.Geometry.LineString.isUnbounded\n\nReturns whether the geometry is unbounded.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|----------------------------|---------|\n| LineString.isUnbounded`()` | Boolean |\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 isUnbounded method to the LineString object.\nvar lineStringIsUnbounded = lineString.isUnbounded();\n\n// Print the result to the console.\nprint('lineString.isUnbounded(...) =', lineStringIsUnbounded);\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 isUnbounded method to the LineString object.\nlinestring_is_unbounded = linestring.isUnbounded()\n\n# Print the result.\ndisplay('linestring.isUnbounded(...) =', linestring_is_unbounded)\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```"]]
