diff --git a/doc/reference_processing.xml b/doc/reference_processing.xml index 320eb4240..c2e12ab4d 100644 --- a/doc/reference_processing.xml +++ b/doc/reference_processing.xml @@ -375,7 +375,7 @@ FROM someroadstable; 15, 'quad_segs=4 join=round' original line -and its offset 15 units to the left. +and its offset 15 units. @@ -399,16 +399,17 @@ LINESTRING(164 1,18 1,12.2597485145237 2.1418070123307, -15, 'quad_segs=4 join=round' original line - and its offset 15 units to the right. + and its offset -15 units and then a double-offset to get more curvy -SELECT ST_AsText(ST_OffsetCurve(ST_GeomFromText( +SELECT ST_AsText(ST_OffsetCurve(geom, + -15, 'quad_segs=4 join=round')) As nosocurvy + FROM ST_GeomFromText( 'LINESTRING(164 16,144 16,124 16,104 16,84 16,64 16, 44 16,24 16,20 16,18 16,17 17, 16 18,16 20,16 40,16 60,16 80,16 100, - 16 120,16 140,16 160,16 180,16 195)'), - -15, 'quad_segs=4 join=round')); + 16 120,16 140,16 160,16 180,16 195)') As geom; -- output -- LINESTRING(31 195,31 31,164 31)