diff --git a/src/main/thrift/parquet.thrift b/src/main/thrift/parquet.thrift index 528e6323..c04f2921 100644 --- a/src/main/thrift/parquet.thrift +++ b/src/main/thrift/parquet.thrift @@ -477,9 +477,13 @@ enum GeometryEncoding { * Well-known binary (WKB) representations of geometries. * * To be clear, we follow the same rule of WKB and coordinate axis order from - * GeoParquet [1][2]. It is the ISO WKB supporting XY, XYZ, XYM, XYZM and the - * standard geometry types (Point, LineString, Polygon, MultiPoint, - * MultiLineString, MultiPolygon, and GeometryCollection). + * GeoParquet [1][2]. Geometries SHOULD be encoded as ISO WKB [3][4] + * supporting XY, XYZ, XYM, XYZM and the standard geometry types + * Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon, + * and GeometryCollection). Coordinate order is always (x, y) where x is + * easting or longitude and y is northing or latitude. This ordering explicitly + * overrides the axis order as specified in the CRS following the GeoPackage + * specification [5]. * * This is the preferred encoding for maximum portability. It also supports * GeometryStatistics to be set in the column chunk and page index.