try_to_geometry
Preview
This feature is in Public Preview.
Parses the input BINARY or string value and returns the corresponding Geometry value. None is returned if the input is invalid.
For the corresponding Databricks SQL function, see try_to_geometry function.
Syntax
Python
from pyspark.databricks.sql import functions as dbf
dbf.try_to_geometry(col=<col>)
Parameters
Parameter | Type | Description |
|---|---|---|
|
| A string value in WKT or GeoJSON format, or a BINARY value in WKB or EWKB format representing a Geometry value. |
Examples
Python
from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([('POINT Z (3 4 5)',)], ['wkt'])
df.select(dbf.st_asewkt(dbf.try_to_geometry('wkt')).alias('result')).collect()
Output
[Row(result='POINT Z (3 4 5)')]
Python
from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([('{"type":"MultiPoint","coordinates":[[3,4,5]]}',)], ['geojson'])
df.select(dbf.st_asewkt(dbf.try_to_geometry('geojson')).alias('result')).collect()
Output
[Row(result='SRID=4326;MULTIPOINT Z ((3 4 5))')]
Python
from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([(bytes.fromhex('01ef0300000100000001e9030000000000000000084000000000000010400000000000001440'),)], ['wkb'])
df.select(dbf.st_asewkt(dbf.try_to_geometry('wkb')).alias('result')).collect()
Output
[Row(result='GEOMETRYCOLLECTION Z (POINT Z (3 4 5))')]
Python
from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([(bytes.fromhex('01020000a0110f000002000000000000000000084000000000000010400000000000001440000000000000084000000000000010400000000000001440'),)], ['ewkb'])
df.select(dbf.st_asewkt(dbf.try_to_geometry('ewkb')).alias('result')).collect()
Output
[Row(result='SRID=3857;LINESTRING Z (3 4 5,3 4 5)')]
Python
from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([('invalid wkt',)], ['wkt'])
df.select(dbf.st_asewkt(dbf.try_to_geometry('wkt')).alias('result')).collect()
Output
[Row(result=None)]