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I would also like to mention our open source software "Dxf2PostGIS".<br>
<br>
Description:<br>
A tool to convert DXF files to PostGIS geometry tables. A single DXF
file is converted to a PostgreSQL/PostGIS SQL script to create and
populate 5 tables, using the AutoCAD information of point, line,
polyline, text, circle, insert.<br>
<br>
Sourceforge project page:<br>
<a class="moz-txt-link-freetext" href="http://sourceforge.net/projects/dxf2postgis">http://sourceforge.net/projects/dxf2postgis</a><br>
<br>
Direct download (Windows installer):<br>
<a class="moz-txt-link-freetext" href="http://www.glasic.it/download/open-source/dxf2postgis-setup-for-windows/download.html">http://www.glasic.it/download/open-source/dxf2postgis-setup-for-windows/download.html</a><br>
<br>
Regards,<br>
<br>
Guglielmo Nigri<br>
Glasic S.r.l.<br>
<br>
Brent Wood wrote:
<blockquote cite="mid581801.5771.qm@web33205.mail.mud.yahoo.com"
type="cite">
<pre wrap="">--- Eduardo Patto Kanegae <a class="moz-txt-link-rfc2396E" href="mailto:epk.lists@gmail.com"><epk.lists@gmail.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">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?
</pre>
</blockquote>
<pre wrap=""><!---->
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
<a class="moz-txt-link-freetext" href="http://www.happysquirrel.com/index.php?feature=dxf2shp">http://www.happysquirrel.com/index.php?feature=dxf2shp</a>
or see
<a class="moz-txt-link-freetext" href="http://software.geocomm.com/translators/cad-dxf/">http://software.geocomm.com/translators/cad-dxf/</a>
In PostGIS, see
<a class="moz-txt-link-freetext" href="http://postgis.refractions.net/docs/ch06.html#id2843565">http://postgis.refractions.net/docs/ch06.html#id2843565</a>
The functions polygonize, makepolygon & buildarea can probably do what you
want.
You may also find something useful at
<a class="moz-txt-link-freetext" href="http://software.geocomm.com/topology/">http://software.geocomm.com/topology/</a>
HTH,
Brent Wood
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</pre>
</blockquote>
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