Geometry length（几何长度(Geometry length)）¶

Supported in: Batch, Streaming

Get the length of the line strings and multi line strings in the geometry in meters. Uses a spherical approximation of the globe. Non-linear geometries (polygons and points) count as 0.

Expression categories: Geospatial

Declared arguments¶

Expression: GeoJSON string.
Expression\

Output type: Double

Examples¶

Example 1: Base case¶

Argument values:

Expression: geometry

geometry	Output
{"type":"LineString","coordinates":[[-73.778128,40.641195],[-118.408535,33.941563]]}	3974344.7433354934
{"type":"LineString","coordinates":[[0.0,0.0],[1.0,0.0],[1.0,1.0],[1.0,2.0]]}	333585.2407005987
{"type":"MultiLineString","coordinates":[[[0.0,0.0],[1.0,0.0],[1.0,1.0]], [[1.0,2.0],[2.0,2.0]]]}	333517.50194413937

Example 2: Null case¶

Argument values:

Expression: geometry

geometry	Output
null	null

Example 3: Edge case¶

Argument values:

Expression: geometry

geometry	Output
{"type":"GeometryCollection","geometries":[{"type":"Polygon","coordinates":[[[-1.0,-1.0],[-3.0,-1.0]...	333517.50194413937
{"type":"Polygon","coordinates":[[[-1.0,-1.0],[-3.0,-1.0],[-2.0,-2.0],[-1.0,-1.0]]]}	0.0
{"type":"MultiPoint","coordinates":[[23.0,30.0],[12.0,15.3]]}	0.0

中文翻译¶

几何长度(Geometry length)¶

支持：批量处理(Batch)、流处理(Streaming)

以米为单位获取几何图形中线段和多线段的长度。采用球面近似计算地球。非线状几何图形（多边形和点）计为0。

表达式类别： 地理空间(Geospatial)

声明的参数¶

表达式(Expression)： GeoJSON字符串。
表达式\

输出类型： Double

示例¶

示例1：基本情况¶

参数值：

表达式(Expression)： geometry

geometry	输出(Output)
{"type":"LineString","coordinates":[[-73.778128,40.641195],[-118.408535,33.941563]]}	3974344.7433354934
{"type":"LineString","coordinates":[[0.0,0.0],[1.0,0.0],[1.0,1.0],[1.0,2.0]]}	333585.2407005987
{"type":"MultiLineString","coordinates":[[[0.0,0.0],[1.0,0.0],[1.0,1.0]], [[1.0,2.0],[2.0,2.0]]]}	333517.50194413937

示例2：空值情况¶

参数值：

表达式(Expression)： geometry

geometry	输出(Output)
null	null

示例3：边界情况¶

参数值：

表达式(Expression)： geometry

geometry	输出(Output)
{"type":"GeometryCollection","geometries":[{"type":"Polygon","coordinates":[[[-1.0,-1.0],[-3.0,-1.0]...	333517.50194413937
{"type":"Polygon","coordinates":[[[-1.0,-1.0],[-3.0,-1.0],[-2.0,-2.0],[-1.0,-1.0]]]}	0.0
{"type":"MultiPoint","coordinates":[[23.0,30.0],[12.0,15.3]]}	0.0