st_buffer

Important

This feature is in Public Preview.

Returns the buffer of the input geometry using the specified radius.

For the corresponding Databricks SQL function, see st_buffer function.

Syntax

from pyspark.databricks.sql import functions as dbf

dbf.st_buffer(col1=<col1>, col2=<col2>)

Parameters

Parameter	Type	Description
col1	pyspark.sql.Column or str	A Geometry value.
col2	pyspark.sql.Column or float	Radius of the buffer. The unit of the radius are those of the coordinate reference system of the geometry.

Examples

from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([('POINT(0 0)',)], ['wkt'])
df.select(dbf.st_asewkt(dbf.st_envelope(dbf.st_buffer(dbf.st_geomfromtext('wkt', 4326), 1.0))).alias('result')).collect()

[Row(result='SRID=4326;POLYGON((-1 -1,-1 1,1 1,1 -1,-1 -1))')]