[postgis-devel] [PostGIS] #212: compound curve in a curve polygon is flaky
PostGIS
trac at osgeo.org
Tue Jul 7 04:30:46 PDT 2009
#212: compound curve in a curve polygon is flaky
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Reporter: robe | Owner: mleslie
Type: defect | Status: closed
Priority: medium | Milestone: postgis 1.4.0
Component: postgis | Version: 1.4
Resolution: fixed | Keywords:
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Comment (by robe):
Mark L,
I'm still a bit confused by your statement. My above curved polygon works
now by the way so we should keep this closed.
If the sql-mm specs say that for a mulilinestring or compound curve, it
should return the count of points of the first element, then shouldn't
this return 5 rather than null?
SELECT ST_NumPoints(ST_GeomFromEWKT('COMPOUNDCURVE(CIRCULARSTRING(0 0,2 0,
2 1, 2 3, 4 3),(4 3, 4 5, 1 4, 0 0))'));
I personally don't care since I just assume ST_NPoints and ST_NumPoints
behave like ST_NPoints since the whole ST_NumPoints being different from
ST_NPoints is just a nuisance, counterintuitive to what people expect, and
doesn't even behave consistently across spatial databases to be (in
practice not portable). I don't care if we are extending the spec in this
case. So I apologize for arguing a point I care less about.
--
Ticket URL: <http://trac.osgeo.org/postgis/ticket/212#comment:13>
PostGIS <http://trac.osgeo.org/postgis/>
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