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Merge pull request #358 from slarosa/sextante-issue

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fix for sextante/convexhull tool based on field
This commit is contained in:
volaya 2012-12-14 05:58:19 -08:00
commit 46016e251f
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"