Github user dsmiley commented on a diff in the pull request:
https://github.com/apache/lucene-solr/pull/246#discussion_r138331920
--- Diff:
lucene/spatial-extras/src/java/org/apache/lucene/spatial/spatial4j/Geo3dShapeFactory.java
---
@@ -125,7 +125,12 @@ public Point pointXY(double x, double y) {
@Override
public Point pointXYZ(double x, double y, double z) {
--- End diff --
x,y,z here is horizontal (longitude), vertical (latitude), and some
user-defined value. It's not geo-centric coordinates as is found commonly in
Geo3d. This method is called by the WKT parser (and perhaps GeoJSON?) if the
input format has a 3rd dimension to it.
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