st_dimensión

Importante

Esta característica está en versión preliminar pública.

Devuelve la dimensión topológica de la proyección 2D de la geometría de entrada.

Para obtener la función SQL de Databricks correspondiente, consulte st_dimension function.

Syntax

from pyspark.databricks.sql import functions as dbf

dbf.st_dimension(col=<col>)

Parámetros

Parámetro	Tipo	Description
col	pyspark.sql.Column o str	Un valor Geometry.

Examples

from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([('MULTIPOINT(EMPTY,-1 0,EMPTY)',)], ['wkt'])
df.select(dbf.st_dimension(dbf.st_geomfromtext('wkt', 4326)).alias('result')).collect()

[Row(result=0)]

from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([('LINESTRING(-1 0,0 -1,1 0,0 1,-1 0)',)], ['wkt'])
df.select(dbf.st_dimension(dbf.st_geomfromtext('wkt')).alias('result')).collect()

[Row(result=1)]

from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([('MULTIPOLYGON(EMPTY,((-1 0,0 -1,1 0,0 1,-1 0)))',)], ['wkt'])
df.select(dbf.st_dimension(dbf.st_geomfromtext('wkt')).alias('result')).collect()

[Row(result=2)]

from pyspark.databricks.sql import functions as dbf
from pyspark.sql.functions import unhex
df = spark.createDataFrame([('0107000020e610000000000000',)], ['ewkb'])
df.select(dbf.st_dimension(dbf.st_geomfromewkb(unhex('ewkb'))).alias('result')).collect()

[Row(result=0)]