Re: R: converting mapping DXF file

[Chris Marshall <chris(at)eclipsecreative.co.uk>]

Thanks Andrea,
That sounds like it might be what I'm after. The example data is here, 
if you fancy having a look:-
http://www.ordnancesurvey.co.uk/oswebsite/products/landformprofileplus/techinfo.html

Will be interesting to see how you get on.


Felici Andrea wrote:
> Try using "Global Mapper" (www.globalmapper.com), a complete and not expensive software that read/write all kind of GIS data.
> You can load DXF and reexport in a format suitable for XSI downsampling the height data.
> I you can put on an ftp the file I can try to see what happen.
> I've successfully used this SW for loading DEM and Hires Geotiff in XSifor several Italian productions talking about our "beautiful" peninsula and his coasts.
>
> Andrea
>
> -----Messaggio originale-----
> Da: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] Per conto di Chris Marshall
> Inviato: Thursday, May 31, 2007 11:02 AM
> A: xsi(at)Softimage.COM
> Oggetto: converting mapping DXF file
>
> Hi All,
> Just picking brains here. We need to get some mapping data into XSI 
> purchased from Ordnance Survey. The files are essentially height data in 
> DXF format though there are two other formats, NTF and ArcGrid. Now 
> we've been trying to convert the DXF sample file using various 
> converters, but the file is huge, over 180mb of data and nothing really 
> wants to convert it. What we need is to somehow open the file, reduce 
> it's size (resolution), and output a poly grid or grid of nulls, to get 
> into XSI.
> Has anyone had experience of this? What I'm wondering is, would it be 
> possible to get a piece of code that runs through the DXF file and 
> reduces its size. ie extracts every 3rd point or something. Basically 
> the files only come in one size, which is our main problem, and we don't 
> necessarily need the resolution they're supplying.
>
> Any help would be very appreciated! Thanks
>
> Chris
>
>   


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