Many thanks Dane.
I'll follow the route you suggest.
Thanks for the quick reply.
Regards,
Philip
On 18 March 2011 15:46, Dane Springmeyer <[email protected]> wrote:
>
> On Mar 18, 2011, at 4:00 AM, Philip Howarth wrote:
>
> I want to add a track from a gpx file to a map.
>
> To get started I followed the usage info in the trac documentation - but
> hit a problem immediately.
> It seems that the Expat library is required:
>
> >>> mapnik.Ogr(file='c:/test.gpx')
>
> Traceback (most recent call last):
> File "<pyshell#1>", line 1, in <module>
> mapnik.Ogr(file='c:/test.gpx')
> File "C:\Program Files
> (x86)\mapnik-0.7.1\python\2.6\site-packages\mapnik\__init__.py", line 419,
> in Ogr
> return CreateDatasource(keywords)
> *RuntimeError: OGR/GPX driver has not been built with read support. Expat
> library required*
> >>>
>
>
>
> Hi Philip. I think that the Windows binaries statically link the GDAL/OGR
> library, and the build that was made clearly does not support Expat. So, I
> think on windows your only option is to install a new version of GDAL/OGR to
> convert that .gpx file into something like a shapefile beforehand.
>
> The dependency chain for GDAL/OGR is quite large so it is understandable,
> that Artem, who provides the Mapnik binaries, skipping building GDAL/OGR
> with Expat support.
>
>
> I can run ogrinfo from the command line OK.
>
> I am running under Windows7 (64 bit) with python 2.6 and mapnik 0.7.1:
> >>> sys.version
> '2.6.5 (r265:79096, Mar 19 2010, 21:48:26) [MSC v.1500 32 bit (Intel)]'>>>
> import mapnik
> >>> mapnik.mapnik_version()
> 701
> >>>
>
> I am able to render from postgis without problem.
>
> I'm somewhat out of my depth here - any help appreciated!
>
> Philip
>
> --
> Philip Howarth
> Cambridge UK
> email: [email protected]
> _______________________________________________
> Mapnik-users mailing list
> [email protected]
> https://lists.berlios.de/mailman/listinfo/mapnik-users
>
>
>
--
Philip Howarth
Cambridge UK
email: [email protected]
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