ST_SymDifference

ST_SymDifference takes two geometry columns and returns a geometry column. The output column contains the geometries that represent the portions of the input geometries that do not intersect. If one of the input geometry types is geometry, the output type will be the same. For all other cases the result geometry type will be the same as the input geometry type with the highest dimension.

Function	Syntax
Python	`sym_difference(geometry1, geometry2)`
SQL	`ST_SymDifference(geometry1, geometry2)`

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

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

Examples

Python

SQL

Use dark colors for code blocksCopy
from geoanalytics.sql import functions as ST, Point, Polygon

df = spark.createDataFrame([(Point(8,8), Polygon([[[0,0],[10,0],[10,10],[0,10]]]),)], ["point", "polygon"])

df.select(ST.sym_difference(ST.buffer("point", 5), "polygon")).st.plot()

Plotting example for ST_SymDifference — Plotted result for ST_SymDifference.

Version table

Release	Notes
1.0.0	Function introduced

ST_SymDifference

Examples

Version table

Related topics