[Freegis-list] polygonize a set of lines

GISuser.com - Glenn editor at gisuser.com
Thu Jan 25 21:49:01 CET 2007

See also the translators and tools provided at GISuser.com - free tools
section - there's about 500 apps (translators etc...) listed

PS: those geocomm translators are pretty old by now (I know as I put
them there about 7 years ago before I jumped ship!)



Glenn Letham 
Founder, Managing Editor
editor at gisuser.com
Spatial Media LLC
ph: 1-970-690-3417

Register for the GISuser Today Newsletter

GISuser.com "Taking You Beyond The Map"
We also suggest you visit: 
www.MAPuser.com  - land surveying
www.theamericansurveyor.com - surveyors
www.SymbianOne.com - mobile users & developers
www.LBSzone.com - mobile geospatial
http://gisuser.blogspot.com - Anything Geospatial Blog!


> -----Original Message-----
> From: freegis-list-bounces at intevation.de 
> [mailto:freegis-list-bounces at intevation.de] On Behalf Of Brent Wood
> Sent: Thursday, January 25, 2007 10:37 AM
> To: Eduardo Patto Kanegae; freegis-list at intevation.de
> Subject: Re: [Freegis-list] polygonize a set of lines
> --- Eduardo Patto Kanegae <epk.lists at gmail.com> wrote:
> > Hi folks,
> > 
> > I have a CAD line layer describing the limits of a soil map. It's a 
> > line layer because the first need was for printing only.
> > 
> > Now I need to put this soil map as a polygon into a GIS dataset.
> > 
> > Does anybody recommend any free gis tool that could be 
> usefull to do 
> > that?
> Hi Eduardo,
> I haven't tried it, but I believe GRASS has some capabilities 
> in this area, once you convert the CAD data to a supported format.
> You could try PostGIS, if you can get your data into a 
> postgis table somehow, there are commands to do this. 
> For an Open Source (Windows) tool to do the conversion to 
> shapefile, try 
> http://www.happysquirrel.com/index.php?feature=dxf2shp
>   or see
> http://software.geocomm.com/translators/cad-dxf/
> In PostGIS, see

The functions polygonize, makepolygon & buildarea can probably do what
you want.

You may also find something useful at 



  Brent Wood

Freegis-list mailing list
Freegis-list at intevation.de

More information about the Freegis-list mailing list

This site is hosted by Intevation GmbH (Datenschutzerklärung und Impressum | Privacy Policy and Imprint)