<p>Hello</p>
<p>Thanks for your answer but I think the prefix is ok. I verified in the python console of qgis with QgsApplication.prefixPath()<br /> Ludovic<br /> <br /> <br /><br /></p>
<blockquote style="padding-left: 5px; margin-left: 5px; border-left: #ff0000 2px solid;">> Message du 25/08/12 12:08<br />> De : "Germán Carrillo" <br />> A : "ludo" <br />> Copie à : qgis-developer@lists.osgeo.org<br />> Objet : Re: [Qgis-developer] Python ogr driver issue (was ----> (no subject))<br />> <br />> Hi Ludovic, <br />> <br />> probably the prefix path you are using is wrong. Try with '/usr/local/' or check where qgis bins and libraries are located and adjust the prefix path accordingly.<br />> <br />> Regards, <br />> <br />> Germán<br />> <br />>
<div class="gmail_quote">2012/8/25 ludo <span><<a href="mailto:ludovic.granjon@wanadoo.fr" target="_blank">ludovic.granjon@wanadoo.fr</a>></span><br />>
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<p>> Hi</p>
<p>> Yes you are right, I forgot the title I'm sorry</p>
<p>> I try your code on monday and I tell you</p>
<p>> Thanks</p>
<p>> </p>
<p>> Ludovic<br />> <br />> <br />> <br />> <br />></p>
<blockquote style="border-left: 2px solid #ff0000; padding-left: 5px; margin-left: 5px;">> Message du 24/08/12 19:09<br />> > De : "Tim Sutton" <br />> > A : "ludo" <br />> > Copie à : <a href="mailto:qgis-developer@lists.osgeo.org" target="_blank">qgis-developer@lists.osgeo.org</a><br />> > Objet : Re: [Qgis-developer] Python ogr driver issue (was ----> (no subject))
<div class="im"><br />> > <br />> > Hi (adding a proper subject line to your messages is always nice)<br />> > <br />></div>
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<div class="h5">> On Fri, Aug 24, 2012 at 12:09 PM, ludo wrote:<br />> > > Hi all<br />> > ><br />> > > I try to start the developpement for a custom application with qgis, so I<br />> > > try simple things like add a vector layer but I have some problems. In a<br />> > > python console when I try to do something like that :<br />> > ><br />> > >>>> core.QgsApplication.setPrefixPath('/usr',True)<br />> > >>>> core.QgsApplication.initQgis()<br />> > >>>> l = core.QgsVectorLayer('/home/ludo/data/test.shp', 'test', 'ogr')<br />> > >>>> l.isValid()<br />> > ><br />> > > I always have a False result<br />> > ><br />> > > But if I try in the python console of qgis :<br />> > ><br />> > >>>> l = QgsVectorLayer('/home/ludo/data/test.shp', 'test', 'ogr')<br />> > >>>> l.isValid()<br />> > ><br />> > > The result is True<br />> > ><br />> > > Is someone have an idea ? Are there any other documentation that<br />> > > <a href="http://qgis.org/pyqgis-cookbook/" target="_blank">http://qgis.org/pyqgis-cookbook/</a><br />> > <br />> > <br />> > There is a growing set of python unit tests that you can consult for ideas.<br />> > <br />> > Providiing the stdout from your console might help us to understand<br />> > where your problem originates. Here is a little sript I often use:<br />> > <br />> > -----------------------------------------------------------------<br />> > <br />> > import os<br />> > import sys<br />> > from qgis.core import QgsApplication, QgsProviderRegistry<br />> > <br />> > myUseDefaultPathFlag = True<br />> > QGISAPP.setPrefixPath('/usr', myUseDefaultPathFlag)<br />> > QGISAPP.initQgis()<br />> > s = QGISAPP.showSettings()<br />> > print s<br />> > r = QgsProviderRegistry.instance()<br />> > if not 'ogr' in r.providerList():<br />> > print 'Could not find OGR provider!'<br />> > else:<br />> > print 'Providers found ok!'<br />> > <br />> > -----------------------------------------------------------------<br />> > <br />> > Hope that helps!<br />> > <br />> > <br />> > Tim<br />> > ><br />> > > Thanks a lot<br />> > ><br />> > > Ludovic<br />> > > _______________________________________________<br />> > > Qgis-developer mailing list<br />> > > <a href="mailto:Qgis-developer@lists.osgeo.org" target="_blank">Qgis-developer@lists.osgeo.org</a><br />> > > <a href="http://lists.osgeo.org/mailman/listinfo/qgis-developer" target="_blank">http://lists.osgeo.org/mailman/listinfo/qgis-developer</a><br />> > ><br />> > <br />> > <br />> > <br />> > -- <br />> > Tim Sutton - QGIS Project Steering Committee Member (Release Manager)<br />> > ==============================================<br />> > Please do not email me off-list with technical<br />> > support questions. Using the lists will gain<br />> > more exposure for your issues and the knowledge<br />> > surrounding your issue will be shared with all.<br />> > <br />> > Visit <a href="http://linfiniti.com" target="_blank">http://linfiniti.com</a> to find out about:<br />> > * QGIS programming and support services<br />> > * Mapserver and PostGIS based hosting plans<br />> > * FOSS Consulting Services<br />> > Skype: timlinux<br />> > Irc: timlinux on #qgis at <a href="http://freenode.net" target="_blank">freenode.net</a><br />> > ==============================================<br />> ></div>
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