ST_PointFromText

ST_PointFromText takes a string column and returns a point column. The string column must contain the well-known text (WKT) representation of point geometries. You can optionally specify a spatial reference for the result point column. The sr parameter value must be a valid SRID or WKT string.

For more details, go to the GeoAnalytics Engine API reference for point_from_text.

This function implements the OpenGIS Simple Features Implementation Specification for SQL 1.2.1.

Examples

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from geoanalytics.sql import functions as ST

df = spark.createDataFrame([('POINT (-72.047 -49.292)',)], ["wkt"])

df.select(ST.point_from_text("wkt", srid=4326).alias("point_from_text")).show(truncate=False)

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+-------------------------+
|point_from_text          |
+-------------------------+
|{"x":-72.047,"y":-49.292}|
+-------------------------+

Version table

Related topics

• SQL functions
• Data sources
• Coordinate systems and transformations