[Gdal-dev] OGR: DXF driver

[Andreas Neumann]

Frank,

can you do a very rough estimate how much it would cost to implement the
read/write dxf driver based on your proposal? Would you deal with dwgs
also, or just dxf - how similar/different are dxf and dwg?

We could help financing it, but not the whole thing. If a couple of
interested parties would collaborate for the financing it could work.

dxf would definitely be interesting to have in ogr. I know that there can
be a wide variety of dxf files from the different products that generate
dxf.

Andreas


> Fodder wrote:
>> Hi Frank,
>>
>> Thanks, this would be great, although I can't fund it in completion
>> (Euro
>>>>>> Aussie dollar :) .Would you be prepared to develop just the READ
>>>>>> side
>> of the driver, and what do you think that would cost (without styling)?
>
> Fodder,
>
> I would be willing to implement only read support, though it would not
> reduce the pricing all that much.
>
>> Alternatively, are other users/organisations interested in jointly
>> contributing?
>>
>> On your proposal, you say that it would not support REGION, is it normal
>> for
>> polygons to be recorded as special polylines in DXF (such as from
>> AutoCAD
>> for example)?
>
> I'm afraid I'm not entirely sure what is normal.  I reviewed DXF docs,
> a couple example files, and the GRASS DXF import program in preparing the
> proposal, but DXF is still a bit of a mystery to me.  The proposal was
> deliberately simplistic to match my current level of understanding.
>
>> Would it support attributes, such as a DXF of contour lines with
>> elevation
>> attributes?
>
> Generally no, though there is some opportunity improve the driver a bit
> for easily recognizable attributes.  I have avoided doing a DXF driver for
> many years because while the format is not so complicated, there are a
> wide variety of ways for applications to encode complete geometries and
> attach attributes.
>
> Best regards,
> --
> ---------------------------------------+--------------------------------------
> I set the clouds in motion - turn up   | Frank Warmerdam,
> warmerdam at pobox.com
> light and sound - activate the windows | http://pobox.com/~warmerdam
> and watch the world go round - Rush    | Geospatial Programmer for Rent
>
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-- 
Andreas Neumann
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