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