[Qgis-developer] [Python] splitGeometry

[Bernhard Ströbl]

Hi Denis,

thank you for the hint. It's true (newGeometries is misleading, though)
so for anyone interested, here is the relevant part of my code:

#split geometry
result, newGeometries, topoTestPoints =
myGeometry.splitGeometry(splitterPList, True)

#update the original feature
myFeature.setGeometry(myGeometry)
myLayer.updateFeature(myFeature)
# create new features for all new geometries
for aGeom in newGeometries:
   newFeature = QgsFeature()
   newFeature.setAttributes(myFeature.attributes())
   myLayer.addFeature(newFeature)

Bernhard


Am 09.07.2013 13:45, schrieb Denis Rouzaud:
> Hi Bernard,
>
> If I remember well, when you do myGeom.splitGeometry, it returns the
> splitted geometry which is removed from myGeom.
> So basically, you do have both parts.
>
> Cheers,
>
> Denis
>
> On 07/09/2013 01:15 PM, Bernhard Ströbl wrote:
>> Hi,
>>
>> I am trying to split a geometry (polygon) with a line, the line is
>> straight and crossing the polygon's boundary exactly twice; here is my
>> code:
>>
>> result, newGeometries, topoTestPoints =
>> myGeometry.splitGeometry(splitterPList, True)
>>
>> the result is 0 (OK) but newGeometries contains only _one_ polygon. I
>> was under the impression that newGeometries would contain _all_
>> polygons resulting from the split operation, i.e. the two halves at
>> each side of the line.
>> If this is the intended behaviour I think I can make a workaround with
>> myGeometry.difference(newGeometries[0]), if it is not I will file a
>> ticket.
>>
>> Bernhard
>>
>>
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>
>
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