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[processing] correctly handle tiny polygons smaller than raster cell

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size in Hypsometric curves algorithm (fix #12278)
This commit is contained in:
Alexander Bruy 2015-02-26 21:06:59 +02:00
parent 3a187be11e
commit a41094d42e
1 changed files with 6 additions and 0 deletions
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6
python/plugins/processing/algs/qgis/HypsometricCurves.py
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@ -132,6 +132,12 @@ class HypsometricCurves(GeoAlgorithm):
srcOffset = (startColumn, startRow, width, height) srcOffset = (startColumn, startRow, width, height)
srcArray = rasterBand.ReadAsArray(*srcOffset) srcArray = rasterBand.ReadAsArray(*srcOffset)
if srcOffset[2] == 0 or srcOffset[3] == 0:
progress.setInfo(
self.tr('Feature %d does is smaller than raster '
'cell size' % f.id()))
continue
newGeoTransform = ( newGeoTransform = (
geoTransform[0] + srcOffset[0] * geoTransform[1], geoTransform[0] + srcOffset[0] * geoTransform[1],
geoTransform[1], geoTransform[1],