Jia Yu created SEDONA-235:
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Summary: Create ST_S2_CellId in Sedona
Key: SEDONA-235
URL: https://issues.apache.org/jira/browse/SEDONA-235
Project: Apache Sedona
Issue Type: New Feature
Reporter: Jia Yu
Assignee: Zongsi Zhang
This feature will be mainly used for performing spatial join.
Given a specific resolution, ST_S2_CellId on each geometry will yield different
results
# Point / MultiPoint: generate a cell id for each point
# Polygon / MultiPolygon: generate an array of ids. These cells should fully
cover the exact shapes of these polygons - Or, at least the MBRs of these
polygons.
# LineString / MultiLineString: generate an array of ids. These cells should
fully cover the exact shapes of these LineStrings - Or, at least the MBRs of
these LineStrings.
# GeometryCollection: for each geometry inside, choose the corresponding
solution above.
XYZM handling: only deal with XY, ignoring Z and M
Null safety: produce a null given a null geometry input.
The PR should demonstrate how to run spatial join using S2 ids and produce
accurate results.
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