[Zoo-discuss] [ZOO-Discuss] FOSS4G 2010 ZOO Workshop Problem

[Christian Rüh]

Hi Gerald,

thank you for the fast answer that helped me a lot :-)
I was able to fix the problem with your hint.

However, the next problem was right around the corner. After the ConvexHull and Centroid functions worked fine the Buffer function won't.

I get the following error:
<ows:ExceptionText>
TRACE : ('Result',)
TRACE : <type 'exceptions.KeyError'>
Unable to run your python process properly. Please check the following messages : ['  File "/usr/lib/cgi-bin/ogr_ws_service_provider.py", line 54, in Buffer\n    outputResult(outputs["Result"],rgeom)\n']
</ows:ExceptionText>

I've looked into keyerrors and python but wasn't able to resolve this issue. Especially since the line (54)
"outputResult(outputs["Result"],rgeom)"
was used in all the other functions as well and worked fine there.

I attached my Buffer.zcfg and ogr_ws_service_provider.py.

I really hope you can help me with this problem, too, and am thankful in advance :-)

Cheers and thanks,
Christian

________________________________________
Von: Fenoy Gerald [gerald.fenoy at geolabs.fr]
Gesendet: Freitag, 15. November 2013 16:18
An: ZOO-discuss
Cc: Christian Rüh
Betreff: Re: [ZOO-Discuss] FOSS4G 2010 ZOO Workshop Problem

Hi Christian,
it seems that the issue is only in the Python service code.

I noticed a strange thing in the error message, it seems that there is a tabulation ("\t") which was inserted by mistake in the ogr_ws_service_provider.py file on line 18.

Check the expression on line 18 and remove any tabulation located near the "name()=\’Multipolygon\’"

Hope this solve your issue.

Best regards,


Le 15 nov. 2013 à 15:24, Sickboy <christian.rueh at uni-rostock.de> a écrit :

> Hi there,
>
> I tried to do the above workshop
> (http://www.zoo-project.org/site/ZooWorkshop2010/Content) and got stuck at
> step 3.3.1.2 (Creating WPS compliant OGR based Web Services -> Implementing
> single geometry processes -> Boundary -> Python version). I wasn't able to
> compile the C version (I'm don't really know anything about C and Linux
> which might be the problem) so I went for the Python version. If I try one
> of the URLs given to test the process I get:
> <ows:ExceptionReport xsi:schemaLocation="http://www.opengis.net/ows/1.1
> http://schemas.opengis.net/ows/1.1.0/owsExceptionReport.xsd" xml:lan="en"
> service="WPS" version="1.0.0">
> <ows:Exception exceptionCode="NoApplicableCode">
> <ows:ExceptionText>
> TRACE : xmlXPathEval() failed
> TRACE : <class 'libxml2.xpathError'>
> Unable to run your python process properly. Please check the following
> messages : ['  File "/usr/lib/cgi-bin/ogr_ws_service_provider.py", line 18,
> in Boundary\n
> geometry=createGeometryFromWFS(inputs["InputPolygon"]["value"])\n', '  File
> "/usr/lib/cgi-bin/ogr_ws_service_provider.py", line 7, in
> createGeometryFromWFS\n
> res=ctxt.xpathEval("/*/*/*/*/*[local-name()=\'Polygon\' or
> local-\tname()=\'MultiPolygon\']")\n', '  File
> "/usr/lib/pymodules/python2.6/libxml2.py", line 4894, in xpathEval\n    if
> ret is None:raise xpathError(\'xmlXPathEval() failed\')\n']
> </ows:ExceptionText>
> </ows:Exception>
> </ows:ExceptionReport>
>
> There seems to be a problem with the libxml2 library but even with googling
> I was not able to fix it.
>
> The Geoserver was started when the document told me to (but this does not
> matter as I've tested it without a running Geoserver, too).
> I'm using the OSGeo Live disk 3.0 because the README
> (http://zoo-project.org/trac/attachment/wiki/ZooWorkshop2010/Content/README)
> indicated that.
> I guess it ain't important but I'm using it with VMWare Player 5 on Windows
> 7 x64.
>
> Help would be greatly appreciated since I'm needing this for a seminar with
> my students in 2 weeks.
>
> Cheers and thanks in advance for any help,
> Christian
>
>
>
> --
> View this message in context: http://zoo-discuss.1049523.n5.nabble.com/FOSS4G-2010-ZOO-Workshop-Problem-tp5706683.html
> Sent from the ZOO-Discuss mailing list archive at Nabble.com.
> _______________________________________________
> Zoo-discuss mailing list
> Zoo-discuss at gisws.media.osaka-cu.ac.jp
> http://gisws.media.osaka-cu.ac.jp/mailman/listinfo.cgi/zoo-discuss



Gérald Fenoy
gerald.fenoy at geolabs.fr

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