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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))')]