[Qgis-user] Problems running the python tutorial on osx

[Massimo Di Stefano]

Hi, i'm tring the python's tutorial
but i can't get it working :-/
i'm on osx (10.5.4 ),
QMake version 2.01a
Using Qt version 4.4.0 in /Library/Frameworks

- qgis builded from  svn (revision : 9210)

i downloaded the svn code in :
/GIS/QGIS/qgis_unstable
and configured cmake to build qgis in :
CMAKE_INSTALL_PREFIX             /GIS/QGIS/qgis_unstable

these the python QT code i used
(add vector layer example token from the tutorial :
http://mapserver.sk/~wonder/qgis/tutorials.tar.gz )

#####################################################

import sys, os

qgis_prefix = '/GIS/QGIS/QGRASS/qgis1.0.0.app/Contents/MacOS/'
os.environ['QGIS_DEBUG'] = '-1'
sys.path.insert(0, qgis_prefix + '/share/qgis/python')
sys.path.insert(0, 'ui')

from PyQt4 import QtCore, QtGui
from mainwindow_ui import Ui_MainWindow
from qgis.core import *
from qgis.gui import *


class MainWindow(QtGui.QMainWindow, Ui_MainWindow):

   def __init__(self):
     QtGui.QMainWindow.__init__(self)

     self.setupUi(self)

     self.canvas = QgsMapCanvas()
     self.canvas.setCanvasColor(QtGui.QColor(255,255,255))
     self.canvas.enableAntiAliasing(True)
     self.canvas.useQImageToRender(False)
     self.canvas.show()

     self.layout = QtGui.QVBoxLayout(self.frameMap)
     self.layout.addWidget(self.canvas)

     self.connect(self.mpActionAddLayer, QtCore.SIGNAL("triggered()"),  
self.addLayer)
     self.connect(self.mpActionZoomIn, QtCore.SIGNAL("triggered()"),  
self.zoomIn)
     self.connect(self.mpActionZoomOut, QtCore.SIGNAL("triggered()"),  
self.zoomOut)
     self.connect(self.mpActionPan, QtCore.SIGNAL("triggered()"),  
self.pan)

     self.toolbar = self.addToolBar("File");
     self.toolbar.addAction(self.mpActionAddLayer);
     self.toolbar.addAction(self.mpActionZoomIn);
     self.toolbar.addAction(self.mpActionZoomOut);
     self.toolbar.addAction(self.mpActionPan);

     self.toolPan = QgsMapToolPan(self.canvas)
     self.toolPan.setAction(self.mpActionPan)
     self.toolZoomIn = QgsMapToolZoom(self.canvas, False) # false = in
     self.toolZoomIn.setAction(self.mpActionZoomIn)
     self.toolZoomOut = QgsMapToolZoom(self.canvas, True) # true = out
     self.toolZoomOut.setAction(self.mpActionZoomOut)


   def zoomIn(self):
     self.canvas.setMapTool(self.toolZoomIn)

   def zoomOut(self):
     self.canvas.setMapTool(self.toolZoomOut)

   def pan(self):
     self.canvas.setMapTool(self.toolPan)

   def addLayer(self):
     """add a (hardcoded) layer and zoom to its extent"""

     layerPath = "/Users/sasha/Desktop/from-HD/tutorials/data/test.shp"
     layerName = "test"
     layerProvider = "ogr"

     layer = QgsVectorLayer(layerPath, layerName, layerProvider)
     print layer

     if not layer.isValid():
       return

     QgsMapLayerRegistry.instance().addMapLayer(layer);

     self.canvas.setExtent(layer.extent())

     cl = QgsMapCanvasLayer(layer)
     layers = [cl]
     self.canvas.setLayerSet(layers)

def main(argv):
   app = QtGui.QApplication(argv)

   QgsApplication.setPrefixPath(qgis_prefix, True)
   QgsApplication.initQgis()

   wnd = MainWindow()
   wnd.show()

   retval = app.exec_()

   QgsApplication.exitQgis()
   sys.exit(retval)

if __name__ == "__main__":
   main(sys.argv)


##########################################

tring to run it, i have that the qt application start,
but at its sturtup it put up a log like :

QgsCoordinateReferenceSystem::findMatchingProj will only work if prj  
acr ellipsoid acr and proj4string are set!...

tring to add the layer pressing the apposite button, i have :

Failed to load

No valid projection. Unable to set map units.
Failed to load
<qgis.core.QgsVectorLayer object at 0x4786a8>
Failed to load

the line :
<qgis.core.QgsVectorLayer object at 0x4786a8>
is printed out beacouse i added "print layer" at the layer definition :

Please can you help me to see what i'm wrong ?

thanks to all for any suggestion!

regards,

Massimo Di Stefano

(epifanio on irc.freenode.net)
  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20080830/763f0db6/attachment.html>