st_convexhull

Preview

This feature is in Public Preview.

Returns the convex hull of the input geometry as a geometry.

For the corresponding Databricks SQL function, see st_convexhull function.

Syntax

Python

from pyspark.databricks.sql import functions as dbf

dbf.st_convexhull(col=<col>)

Parameters

Parameter	Type	Description
col	pyspark.sql.Column or str	A Geometry value.

Examples

Python

from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([('POLYGON((0 0,20 0,20 10,15 5,5 10,0 25,0 0))',)], ['wkt'])
df.select(dbf.st_astext(dbf.st_convexhull(dbf.st_geomfromtext('wkt'))).alias('result')).collect()

Output

[Row(result='POLYGON((0 0,0 25,20 10,20 0,0 0))')]