docs: update description for makeline function

substrait-io · Sep 5, 2023 · 8417df0 · 8417df0
1 parent c62276a
commit 8417df0
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/extensions/functions_geometry.yaml b/extensions/functions_geometry.yaml
@@ -18,6 +18,9 @@ scalar_functions:
       Return a linestring containing the points of point, multipoint, or linestring geometries.
       Repeated points at the beginning of input linestring are collapsed to a single point.
       Repeated points in point and multipoint inputs are not collapsed.
+
+      A linestring can be closed or simple.  A closed linestring starts and ends on the same
+      point.  A simple linestring does not cross or touch itself.
     impls:
       - args:
           - name: x