[Talk-GB] Vectorising StreetView buildings in Southwark

Tom Chance tom at acrewoods.net
Thu Jul 1 07:01:50 BST 2010


I have run a comparison with TimSC's mapseg, if anyone is interested. I
think my process comes out with better results:

http://wiki.openstreetmap.org/wiki/User:TomChance/VectorisingStreetView#Comparison_with_Mapseg

I'm still stumped on how to do the first part of step 4 using GDAL, mind.
I've gone into the IRC channel a couple of times without getting any
response. If anyone could give me a pointer I'd appreciate it.

In getting from EPS->DXF->SHP I end up with a shapefile without co-ordinates
(i.e. QGIS shows the top left corner starting at 0,0) and that is only very
small (i.e. the area that should be a few miles across appears to only be a
few meters across).

Where do I start in transforming the shapefile to be the right scale and
then translating the coordinates to shift it to the right part of the world?

Regards,
Tom


On 27 June 2010 20:33, Richard Fairhurst <richard at systemed.net> wrote:

>
> Tom Chance wrote:
> > I'd be interested in feedback, and in any help doing the first bit of
> > step 4 using free software in GNU/Linux.
>
> http://www.gdal.org/ogr2ogr.html
>
> Basically the answer for any question about reprojecting using open source
> is always GDAL. Frank Warmerdam is a genius.
>
> cheers
> Richard
> --
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> Sent from the Great Britain mailing list archive at Nabble.com.
>
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-- 
http://tom.acrewoods.net   http://twitter.com/tom_chance
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