def testStatistics(self):
"""Test zonal stats"""
TEST_DATA_DIR = unitTestDataPath() + "/zonalstatistics/"
myTempPath = QDir.tempPath() + "/"
testDir = QDir(TEST_DATA_DIR)
for f in testDir.entryList(QDir.Files):
QFile.remove(myTempPath + f)
QFile.copy(TEST_DATA_DIR + f, myTempPath + f)
myVector = QgsVectorLayer(myTempPath + "polys.shp", "poly", "ogr")
myRasterPath = myTempPath + "edge_problem.asc"
zs = QgsZonalStatistics(myVector, myRasterPath, "", 1)
zs.calculateStatistics(None)
feat = QgsFeature()
# validate statistics for each feature
request = QgsFeatureRequest().setFilterFid(0)
feat = next(myVector.getFeatures(request))
myMessage = ('Expected: %f\nGot: %f\n' % (12.0, feat[1]))
assert feat[1] == 12.0, myMessage
myMessage = ('Expected: %f\nGot: %f\n' % (8.0, feat[2]))
assert feat[2] == 8.0, myMessage
myMessage = ('Expected: %f\nGot: %f\n' % (0.666666666666667, feat[3]))
assert abs(feat[3] - 0.666666666666667) < 0.00001, myMessage
request.setFilterFid(1)
feat = next(myVector.getFeatures(request))
myMessage = ('Expected: %f\nGot: %f\n' % (9.0, feat[1]))
assert feat[1] == 9.0, myMessage
myMessage = ('Expected: %f\nGot: %f\n' % (5.0, feat[2]))
assert feat[2] == 5.0, myMessage
myMessage = ('Expected: %f\nGot: %f\n' % (0.555555555555556, feat[3]))
assert abs(feat[3] - 0.555555555555556) < 0.00001, myMessage
request.setFilterFid(2)
feat = next(myVector.getFeatures(request))
myMessage = ('Expected: %f\nGot: %f\n' % (6.0, feat[1]))
assert feat[1] == 6.0, myMessage
myMessage = ('Expected: %f\nGot: %f\n' % (5.0, feat[2]))
assert feat[2] == 5.0, myMessage
myMessage = ('Expected: %f\nGot: %f\n' % (0.833333333333333, feat[3]))
assert abs(feat[3] - 0.833333333333333) < 0.00001, myMessage
def testStatistics(self):
"""Test zonal stats"""
TEST_DATA_DIR = unitTestDataPath() + "/zonalstatistics/"
myTempPath = QDir.tempPath() + "/"
testDir = QDir(TEST_DATA_DIR)
for f in testDir.entryList(QDir.Files):
QFile.remove(myTempPath + f)
QFile.copy(TEST_DATA_DIR + f, myTempPath + f)
myVector = QgsVectorLayer(myTempPath + "polys.shp", "poly", "ogr")
myRasterPath = myTempPath + "edge_problem.asc"
zs = QgsZonalStatistics(myVector, myRasterPath, "", 1)
zs.calculateStatistics(None)
feat = QgsFeature()
# validate statistics for each feature
request = QgsFeatureRequest().setFilterFid(0)
feat = next(myVector.getFeatures(request))
myMessage = ('Expected: %f\nGot: %f\n' % (12.0, feat[1]))
assert feat[1] == 12.0, myMessage
myMessage = ('Expected: %f\nGot: %f\n' % (8.0, feat[2]))
assert feat[2] == 8.0, myMessage
myMessage = ('Expected: %f\nGot: %f\n' % (0.666666666666667, feat[3]))
assert abs(feat[3] - 0.666666666666667) < 0.00001, myMessage
request.setFilterFid(1)
feat = next(myVector.getFeatures(request))
myMessage = ('Expected: %f\nGot: %f\n' % (9.0, feat[1]))
assert feat[1] == 9.0, myMessage
myMessage = ('Expected: %f\nGot: %f\n' % (5.0, feat[2]))
assert feat[2] == 5.0, myMessage
myMessage = ('Expected: %f\nGot: %f\n' % (0.555555555555556, feat[3]))
assert abs(feat[3] - 0.555555555555556) < 0.00001, myMessage
request.setFilterFid(2)
feat = next(myVector.getFeatures(request))
myMessage = ('Expected: %f\nGot: %f\n' % (6.0, feat[1]))
assert feat[1] == 6.0, myMessage
myMessage = ('Expected: %f\nGot: %f\n' % (5.0, feat[2]))
assert feat[2] == 5.0, myMessage
myMessage = ('Expected: %f\nGot: %f\n' % (0.833333333333333, feat[3]))
assert abs(feat[3] - 0.833333333333333) < 0.00001, myMessage
def finished(self):
outFn = self.getOutputFileName()
if self.needOverwrite:
oldFile = QFile(outFn)
newFile = QFile(self.tempFile)
if oldFile.remove():
newFile.rename(outFn)
fileInfo = QFileInfo(outFn)
if fileInfo.exists():
if self.base.loadCheckBox.isChecked():
self.addLayerIntoCanvas(fileInfo)
QMessageBox.information(self, self.tr("Finished"), self.tr("Processing completed."))
else:
QMessageBox.warning(self, self.tr("Warning"), self.tr("{0} not created.").format(outFn))
def onFinished(self, exitCode, status):
if not self.isBatchEnabled():
BasePluginWidget.onFinished(self, exitCode, status)
return
msg = bytes.decode(bytes(self.base.process.readAllStandardError()))
if msg != '':
self.errors.append(">> " + self.inFiles[self.batchIndex] + "<br>" + msg.replace("\n", "<br>"))
self.base.process.close()
# overwrite existent files
inDir = self.getInputFileName()
outDir = self.getOutputFileName()
if outDir is None or inDir == outDir:
oldFile = QFile(self.inFiles[self.batchIndex])
newFile = QFile(self.outFiles[self.batchIndex])
if oldFile.remove():
newFile.rename(self.inFiles[self.batchIndex])
self.batchIndex += 1
self.runItem(self.batchIndex, self.batchTotal)