Re: compundcurve in polygons is supported in 1.4

Mario,

Actually Mark L just fixed the bug  in trunk (and he is patching the fix into 1.4 and I believe 1.3 as well).  So it will be fully functional in PostGIS 1.4 probably due out next week and 1.3 about a month later.

st_curvetoline has always worked with curve polygons (with either circularstring or linestring like inner rings) and converts those to regular polygons even if they have holes (the name is a bit confusing http://postgis.refractions.net/documentation/manual-svn/ST_CurveToLine.html ) but for 1.4 and 1.3, it will very shortly work for

curve polygons with compound curves.  It hasn't been really stress tested, so feel free to test it when it comes out.

Here are related bug tickets just recently patched
http://trac.osgeo.org/postgis/ticket/213

http://trac.osgeo.org/postgis/ticket/212

Hope that helps,
Regina


-----Original Message-----
From: postgis-users-bounces@... [mailto:postgis-users-bounces@...] On Behalf Of Mario Jurcevic
Sent: Tuesday, June 30, 2009 3:09 AM
To: 'PostGIS Users Discussion'
Subject: Re: [postgis-users] compundcurve in polygons is supported in 1.4

Hi,
thanks very much I really need this datatype.
Will be possible to create polygons with multiple rings of compoundcurve?
A function like stcurvetoline with the interpolation of arcs will be
available for the polygons too?

Thanks

Mario

-----Original Message-----
From: postgis-users-bounces@...
[mailto:postgis-users-bounces@...] On Behalf Of Paragon
Corporation
Sent: lunedì, 29. giugno 2009 04:03
To: 'PostGIS Users Discussion'
Subject: Re: [postgis-users] compundcurve in polygons is supported in 1.4

Actually I think I spoke too soon on this one.  Still apparently some issues
here.

-----Original Message-----
From: postgis-users-bounces@...
[mailto:postgis-users-bounces@...] On Behalf Of Paragon
Corporation
Sent: Sunday, June 28, 2009 9:42 PM
To: 'PostGIS Users Discussion'
Subject: Re: [postgis-users] compundcurve in polygons is supported in 1.4

Mario,

Sorry for no one getting back to you.  This is actually available in the
upcoming PostGIS 1.4 due out within the next 2 weeks. I had to test it to
verify myself.  So yes as of PostGIS 1.4 you can do this.

SELECT ST_GeomFromEWKT('CURVEPOLYGON(COMPOUNDCURVE(CIRCULARSTRING(0 0,2 0, 2
1, 2 3, 4 3),(4 3, 4 5, 1 4, 0 0)))');

I tried the same on PostGIS 1.3.6 and it doesn't work so guess you have to
wait for 1.4.

Hope that helps,
Regina

-----Original Message-----
From: postgis-users-bounces@...
[mailto:postgis-users-bounces@...] On Behalf Of Mario
Jurcevic
Sent: Thursday, June 18, 2009 4:25 AM
To: postgis-users@...
Subject: [postgis-users] compundcurve in polygons

Hi,
Postgis community will develop compundcurve in polygons?
I will help with my work or with sponsoring a developper for code it.

Thanks



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