ST_AsText takes a geometry column and returns the well-known text (WKT) representation of the geometry as a string column.
| Function | Syntax |
|---|---|
| Python | as |
| SQL | st |
| Scala | as |
For more details, go to the GeoAnalytics Engine API reference for as_text.
This function implements the OpenGIS Simple Features Implementation Specification for SQL 1.2.1
Examples
from geoanalytics.sql import functions as ST, Point
df = spark.createDataFrame([(Point(-178, -17),)], ["point"])
df.select(ST.as_text("point").alias("as_text")).show(truncate=False)Result
+----------------+
|as_text |
+----------------+
|POINT (-178 -17)|
+----------------+Version table
| Release | Notes |
|---|---|
1.0.0 | Python and SQL functions introduced |
1.5.0 | Scala function introduced |