search

libgeos / geos

Geometry Engine, Open Source
https://libgeos.org
GNU Lesser General Public License v2.1
1.1k stars 339 forks source link

There seems to be a circular reference in WKT BNF #1065

Closed LiShunGang closed 1 month ago

LiShunGang commented 1 month ago

Screenshot from the following url https://libgeos.org/specifications/wkt/ image

'wkt representation', 'geometrycollection text representation' and 'geometrycollection text refer' reference each other?

dr-jts commented 1 month ago

Yes, it's a recursive definition. GeometryCollections can contain other GeometryCollections (and anything else).

LiShunGang commented 1 month ago

Thank you. I got it. GeometryCollections can contain itself.