ST_CoordDim takes a geometry column and returns an integer column representing the dimensionality of the coordinates in the input geometry. For example, an input geometry with x,y coordinates only will return 2, while a geometry with x,y,z coordinates will return 3.
| Function | Syntax |
|---|---|
| Python | coord |
| SQL | ST |
| Scala | coord |
For more details, go to the GeoAnalytics Engine API reference for coord_dim.
This function implements the OpenGIS Simple Features Implementation Specification for SQL 1.2.1.
Examples
from geoanalytics.sql import functions as ST, Point
data = [
(Point(10, 10),),
(Point(10, 10, 50),),
(Point(10, 10, 50, 1000),)
]
df = spark.createDataFrame(data, ["point"])
df.select(ST.coord_dim("point").alias("coord_dim")).show()Result
+---------+
|coord_dim|
+---------+
| 2|
| 3|
| 4|
+---------+Version table
| Release | Notes |
|---|---|
1.0.0 | Python and SQL functions introduced |
1.5.0 | Scala function introduced |