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[BACKPORT]fix RandomPoints crash when there are NULL values in

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This commit is contained in:
Alexander Bruy 2011-07-29 19:57:22 +03:00
parent f3d5387edb
commit ccea540242
1 changed files with 6 additions and 4 deletions
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10
python/plugins/fTools/tools/doRandPoints.py
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@ -132,7 +132,7 @@ class Dialog(QDialog, Ui_Dialog):
if self.shapefileName is None or self.encoding is None: if self.shapefileName is None or self.encoding is None:
return return
self.outShape.setText( QString( self.shapefileName ) ) self.outShape.setText( QString( self.shapefileName ) )
# combine all polygons in layer to create single polygon (slow for complex polygons) # combine all polygons in layer to create single polygon (slow for complex polygons)
def createSinglePolygon(self, vlayer): def createSinglePolygon(self, vlayer):
provider = vlayer.dataProvider() provider = vlayer.dataProvider()
@ -153,13 +153,15 @@ class Dialog(QDialog, Ui_Dialog):
count = count + add count = count + add
self.progressBar.setValue(count) self.progressBar.setValue(count)
return geom return geom
# Generate list of random points # Generate list of random points
def simpleRandom(self, n, bound, xmin, xmax, ymin, ymax): def simpleRandom(self, n, bound, xmin, xmax, ymin, ymax):
seed() seed()
points = [] points = []
i = 1 i = 1
count = 40.00 count = 40.00
if n == 0:
return []
add = ( 70.00 - 40.00 ) / n add = ( 70.00 - 40.00 ) / n
while i <= n: while i <= n:
pGeom = QgsGeometry().fromPoint(QgsPoint(xmin + (xmax-xmin) * random(), ymin + (ymax-ymin) * random())) pGeom = QgsGeometry().fromPoint(QgsPoint(xmin + (xmax-xmin) * random(), ymin + (ymax-ymin) * random()))
@ -225,8 +227,8 @@ class Dialog(QDialog, Ui_Dialog):
count = count + add count = count + add
self.progressBar.setValue(count) self.progressBar.setValue(count)
del writer del writer
# #
def loopThruPolygons(self, inLayer, numRand, design): def loopThruPolygons(self, inLayer, numRand, design):
sProvider = inLayer.dataProvider() sProvider = inLayer.dataProvider()
sAllAttrs = sProvider.attributeIndexes() sAllAttrs = sProvider.attributeIndexes()