FW: [GRASS-user] DXF to UTM32

[Markus Neteler]

On Wed, Nov 18, 2009 at 10:33 PM, Pablo Carreira
<pablotcarreira at hotmail.com> wrote:
>
> If your dxf is in a local coordinate system (like old topo drawings) with
> shifting parameters you can use v.transform or you can put it in place with
> a CAD software (align) and them import into GRASS.
> If it already have an utm coordinate and you want to change the reference
> system (datum) create the coresponding location import, change location and
> them v.proj (should be no problem).
>
> I work with a lot of CAD drawings and charts with GRASS and here is a very
> usefull advice:
> The fundaments of areas, boundary and lines in CAD and GIS are different,
> before importing a drawing into a GIS try to make it clean and "GIS like",
> ex. make two areas share the same boundary. Also import only the objects of
> interest, do not import text, paper layout or hatches.

Pablo,

you notes are very interesting! Could you add them into a related Wiki page:
http://grass.osgeo.org/wiki/Import_DXF

thanks
Markus