From 2918d3eeecc5e9fd028b13a2a500a514046ff01e Mon Sep 17 00:00:00 2001 From: Jia Yu Date: Mon, 6 Oct 2025 00:10:54 -0700 Subject: [PATCH] Add clarification --- Geospatial.md | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Geospatial.md b/Geospatial.md index 597ba2b5..113db075 100644 --- a/Geospatial.md +++ b/Geospatial.md @@ -41,6 +41,9 @@ may also be used if the WKB representation remains wire-compatible. Coordinate Reference System (CRS) is a mapping of how coordinates refer to locations on Earth. +For `geometry` type, the CRS does not affect geometric calculations, which +are always Cartesian. + The default CRS `OGC:CRS84` means that the geospatial features must be stored in the order of longitude/latitude based on the WGS84 datum. @@ -100,7 +103,7 @@ only null or NaN values, that dimension is omitted from the bounding box. If either the X or Y dimension is missing, then the bounding box itself is not produced. -For the X values only, xmin may be greater than xmax. In this case, an object +For `geography` type only, xmin may be greater than xmax. In this case, an object in this bounding box may match if it contains an X such that `x >= xmin` OR `x <= xmax`. This wraparound occurs only when the corresponding bounding box crosses the antimeridian line. In geographic terminology, the concepts of `xmin`,