ST_MultiPolygon

ST_MultiPolygon takes an array column and returns a polygon column. The input column must contain an array of arrays of point geometries. The output polygon column represents the one or more rings created from the point arrays.

Function	Syntax
Python	`multipolygon(*arrayOfPoints)`
SQL	`ST_MultiPolygon(*arrayOfPoints)`

For more details, go to the GeoAnalytics Engine API reference for multipolygon.

This function implements the OpenGIS Simple Features Implementation Specification for SQL 1.2.1.

Examples

Python

SQL

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from geoanalytics.sql import functions as ST, Point
from pyspark.sql import functions as F

df = spark.createDataFrame([([[Point(0, 0), Point(10, 0), Point(20, 10), Point(0,0)],
                              [Point(20, 30), Point(18, 28), Point(18, 28), Point(18, 28), Point(20, 30)]], )],
                           ["point_arrays"])

df.select(ST.multipolygon("point_arrays").alias("multipolygon")).show(truncate=False)

Result
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+----------------------------------------------------------------------------------+
|multipolygon                                                                      |
+----------------------------------------------------------------------------------+
|{"rings":[[[0,0],[10,0],[20,10],[0,0]],[[20,30],[18,28],[18,28],[18,28],[20,30]]]}|
+----------------------------------------------------------------------------------+

Version table

Release	Notes
1.0.0	Function introduced

ST_MultiPolygon

Examples

Version table

Related topics