[GRASS5] [bug #2451] (grass) 2 wishes for GRASS 5.7

Radim Blazek blazek at itc.it
Thu Jun 3 04:30:54 EDT 2004

On Thursday 03 June 2004 03:07, Hamish wrote:
> > 2. More difficult, but I think important. I'd like to see DXF import
> > and export modules produced for 5.7. Those in 5.3 have considerable
> > limitations. 5.7 has overall very good I/O routines due to gdal and
> > ogr. However, OGR doesn't include dxf. This is a major data
> > interchange format that I think ought to be supported if possible.
> There is v.in.dwg for this, but it needs a non-free library & you must
> not redistribute any resulting binaries.
> see  http://thread.gmane.org/gmane.comp.gis.grass.devel/1205
> Have there been any improvements in the Free Software solutions for
> DXF importing during the last year?
> e.g. libdime
> Description: DXF Import, Manipulation, and Export library.
>  Dime is a C++ class library for reading, constructing, manipulating,
>  and writing DXF file data.
> http://www.coin3d.org/Coin3D/file_format_libs/Dime/
> [FreeGIS people: the link on your page is broken]
> Is the time better spent getting Dime <=> OGR working?

There is no free DXF library supporting reliably latest DXF. 
I see that Dime status has not changed in last years, still:
"... version 10 through 14, and we've had customers that have used the library to handle 
 AutoCAD 2000 DXF files." 
OpenDWG supports DXF/DWG from 2.5 to 2004. My experience is that AutoCAD 
users use often latest versions.
Generally, I don't like the idea to pretend that some feature is supported
if we know that it is not true.

v.out.dxf is something else, it is simple and it should be updated
to 5.7, but it should read binary file, not ascii. 
It woud be better to have DXF write support in OGR, but I am not sure 
if Frank likes drivers which can write only.


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