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fix for sextante/convexhull tool based on field

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the tool does not work if option "Create convex hulls based on field" is used
to due of missing some methods. This patch fixes the issue.
This commit is contained in:
Salvatore Larosa 2012-12-14 13:57:58 +01:00
parent 32f0dfdb51
commit 7e343558ae
1 changed files with 22 additions and 0 deletions
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22
python/plugins/sextante/ftools/ConvexHull.py
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@ -184,6 +184,28 @@ class ConvexHull(GeoAlgorithm):
if not FEATURE_EXCEPT:
SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Feature exception while computing convex hull")
def simpleMeasure(self, inGeom ):
measure = QgsDistanceArea()
attr1 = measure.measure(inGeom)
if inGeom.type() == QGis.Polygon:
attr2 = self.perimMeasure( inGeom, measure )
else:
attr2 = attr1
return ( attr1, attr2 )
def perimMeasure(self, inGeom, measure ):
value = 0.00
if inGeom.isMultipart():
poly = inGeom.asMultiPolygon()
for k in poly:
for j in k:
value = value + measure.measureLine( j )
else:
poly = inGeom.asPolygon()
for k in poly:
value = value + measure.measureLine( k )
return value
def defineCharacteristics(self):
self.name = "Convex hull"
self.group = "Geoprocessing tools"