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Geometry union（几何并集（Geometry union））

Supported in: Batch, Faster, Streaming

Combines the two geometries to create a single geometry.

Expression categories: Geospatial

Declared arguments

  • Geometry a: Geometry a.
    Expression\
  • Geometry b: Geometry b.
    Expression\

Output type: Geometry

Examples

Example 1: Base case

Argument values:

  • Geometry a: geometry_a
  • Geometry b: geometry_b
geometry_a geometry_b Output
{"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]]} {"type":"Polygon","coordinates":[[[0.5,0.0],[1.5,0.0],[1.5,1.0],[0.5,1.0],[0.5,0.0]]]} {"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[0.5,1.0],[1.0,1.0],[1.5,1.0],[1.5,0.0],[1.0,0.0],[0.5,0.0],[0.0,0.0]]]}
{"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]]} {"type":"Polygon","coordinates":[[[5.0,5.0],[5.0,6.0],[6.0,6.0],[6.0,5.0],[5.0,5.0]]]} {"type":"MultiPolygon","coordinates":[[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]],[[[5.0,5.0],[5.0,6.0],[6.0,6.0],[6.0,5.0],[5.0,5.0]]]]}
{"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]]} {"type":"Polygon","coordinates":[[[1.0,0.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0]]]} {"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0],[0.0,0.0]]]}
{"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]]} {"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]],[[0.25,0.25],[0.5,0.25],[0.5,0.5],[0.25,0.5],[0.25,0.25]]]} {"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]]}
{"type":"LineString","coordinates":[[0.0,0.0],[1.0,0.0]]} {"type":"Polygon","coordinates":[[[1.0,0.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0]]]} {"type":"GeometryCollection","geometries":[{"type":"LineString","coordinates":[[0.0,0.0],[1.0,0.0]]},{"type":"Polygon","coordinates":[[[1.0,0.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0]]]}]}

中文翻译

几何并集（Geometry union）

支持：批量计算（Batch）、快速计算（Faster）、流式计算（Streaming）

将两个几何图形合并为一个几何图形。

表达式类别： 地理空间（Geospatial）

声明的参数

  • 几何图形 a（Geometry a）： 几何图形 a。
    表达式\
  • 几何图形 b（Geometry b）： 几何图形 b。
    表达式\

输出类型： Geometry

示例

示例 1：基础案例

参数值：

  • 几何图形 a： geometry_a
  • 几何图形 b： geometry_b
geometry_a geometry_b 输出结果
{"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]]} {"type":"Polygon","coordinates":[[[0.5,0.0],[1.5,0.0],[1.5,1.0],[0.5,1.0],[0.5,0.0]]]} {"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[0.5,1.0],[1.0,1.0],[1.5,1.0],[1.5,0.0],[1.0,0.0],[0.5,0.0],[0.0,0.0]]]}
{"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]]} {"type":"Polygon","coordinates":[[[5.0,5.0],[5.0,6.0],[6.0,6.0],[6.0,5.0],[5.0,5.0]]]} {"type":"MultiPolygon","coordinates":[[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]],[[[5.0,5.0],[5.0,6.0],[6.0,6.0],[6.0,5.0],[5.0,5.0]]]]}
{"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]]} {"type":"Polygon","coordinates":[[[1.0,0.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0]]]} {"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0],[0.0,0.0]]]}
{"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]]} {"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]],[[0.25,0.25],[0.5,0.25],[0.5,0.5],[0.25,0.5],[0.25,0.25]]]} {"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]]}
{"type":"LineString","coordinates":[[0.0,0.0],[1.0,0.0]]} {"type":"Polygon","coordinates":[[[1.0,0.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0]]]} {"type":"GeometryCollection","geometries":[{"type":"LineString","coordinates":[[0.0,0.0],[1.0,0.0]]},{"type":"Polygon","coordinates":[[[1.0,0.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0]]]}]}