def processAlgorithm(self, feedback):
inputFile = self.getParameterValue(self.INPUT_LAYER)
zFactor = self.getParameterValue(self.Z_FACTOR)
automaticColors = self.getParameterValue(self.AUTO_COLORS)
colors = self.getParameterValue(self.COLORS)
outputFile = self.getOutputValue(self.OUTPUT_LAYER)
frequencyDistribution = self.getOutputValue(self.FREQUENCY_DISTRIBUTION)
outputFormat = raster.formatShortNameFromFileName(outputFile)
relief = QgsRelief(inputFile, outputFile, outputFormat)
if automaticColors:
reliefColors = relief.calculateOptimizedReliefClasses()
else:
if colors is None:
raise GeoAlgorithmExecutionException(
self.tr('Specify relief colors or activate "Generate relief classes automatically" option.'))
reliefColors = []
for c in colors.split(';'):
v = c.split(',')
color = QgsRelief.ReliefColor(QColor(int(v[2]), int(v[3]), int(v[4])),
float(v[0]),
float(v[1]))
reliefColors.append(color)
relief.setReliefColors(reliefColors)
relief.setZFactor(zFactor)
relief.exportFrequencyDistributionToCsv(frequencyDistribution)
relief.processRaster(None)
def on_btnAuto_clicked(self):
if self.layer is None:
return
relief = QgsRelief(self.layer, system.getTempFilename(), 'GTiff')
colors = relief.calculateOptimizedReliefClasses()
self.populateColors(colors)
def processAlgorithm(self, parameters, context, feedback):
inputFile = self.parameterAsRasterLayer(parameters, self.INPUT, context).source()
zFactor = self.parameterAsDouble(parameters, self.Z_FACTOR, context)
automaticColors = self.parameterAsBoolean(parameters, self.AUTO_COLORS, context)
outputFile = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
frequencyDistribution = self.parameterAsFileOutput(parameters, self.FREQUENCY_DISTRIBUTION, context)
outputFormat = QgsRasterFileWriter.driverForExtension(os.path.splitext(outputFile)[1])
relief = QgsRelief(inputFile, outputFile, outputFormat)
if automaticColors:
reliefColors = relief.calculateOptimizedReliefClasses()
else:
colors = ParameterReliefColors.valueToColors(parameters[self.COLORS])
if colors is None or len(colors) == 0:
raise QgsProcessingException(
self.tr('Specify relief colors or activate "Generate relief classes automatically" option.'))
reliefColors = []
for c in colors:
v = c.split(',')
color = QgsRelief.ReliefColor(QColor(int(v[2]), int(v[3]), int(v[4])),
float(v[0]),
float(v[1]))
reliefColors.append(color)
relief.setReliefColors(reliefColors)
relief.setZFactor(zFactor)
if frequencyDistribution:
relief.exportFrequencyDistributionToCsv(frequencyDistribution)
relief.processRaster(feedback)
return {self.OUTPUT: outputFile, self.FREQUENCY_DISTRIBUTION: frequencyDistribution}
def on_btnAuto_clicked(self):
if self.layer is None:
return
relief = QgsRelief(self.layer, system.getTempFilename(), 'GTiff')
colors = relief.calculateOptimizedReliefClasses()
self.populateColors(colors)
def processAlgorithm(self, progress):
inputFile = self.getParameterValue(self.INPUT_LAYER)
zFactor = self.getParameterValue(self.Z_FACTOR)
outputFile = self.getOutputValue(self.OUTPUT_LAYER)
frequencyDistribution = self.getOutputValue(self.FREQUENCY_DISTRIBUTION)
outputFormat = raster.formatShortNameFromFileName(outputFile)
relief = QgsRelief(inputFile, outputFile, outputFormat)
colors = relief.calculateOptimizedReliefClasses()
relief.setReliefColors(colors)
relief.setZFactor(zFactor)
relief.exportFrequencyDistributionToCsv(frequencyDistribution)
relief.processRaster(None)
def reliefColors(self):
colors = []
for i in range(self.reliefClassTree.topLevelItemCount()):
item = self.reliefClassTree.topLevelItem(i)
if item:
c = QgsRelief.ReliefColor(item.background(2).color(),
float(item.text(0)),
float(item.text(1)))
colors.append(c)
return colors
def processAlgorithm(self, parameters, context, feedback):
inputFile = exportRasterLayer(
self.parameterAsRasterLayer(parameters, self.INPUT, context))
zFactor = self.parameterAsDouble(parameters, self.Z_FACTOR, context)
automaticColors = self.parameterAsBool(parameters, self.AUTO_COLORS,
context)
outputFile = self.parameterAsOutputLayer(parameters, self.OUTPUT,
context)
frequencyDistribution = self.parameterAsFileOutput(
parameters, self.FREQUENCY_DISTRIBUTION, context)
outputFormat = QgsRasterFileWriter.driverForExtension(
os.path.splitext(outputFile)[1])
relief = QgsRelief(inputFile, outputFile, outputFormat)
if automaticColors:
reliefColors = relief.calculateOptimizedReliefClasses()
else:
colors = ParameterReliefColors.valueToColors(
parameters[self.COLORS])
if colors is None or len(colors) == 0:
raise QgsProcessingException(
self.
tr('Specify relief colors or activate "Generate relief classes automatically" option.'
))
reliefColors = []
for c in colors:
v = c.split(',')
color = QgsRelief.ReliefColor(
QColor(int(v[2]), int(v[3]), int(v[4])), float(v[0]),
float(v[1]))
reliefColors.append(color)
relief.setReliefColors(reliefColors)
relief.setZFactor(zFactor)
if frequencyDistribution:
relief.exportFrequencyDistributionToCsv(frequencyDistribution)
relief.processRaster(feedback)
return {
self.OUTPUT: outputFile,
self.FREQUENCY_DISTRIBUTION: frequencyDistribution
}
def processAlgorithm(self, feedback):
inputFile = self.getParameterValue(self.INPUT_LAYER)
zFactor = self.getParameterValue(self.Z_FACTOR)
automaticColors = self.getParameterValue(self.AUTO_COLORS)
colors = self.getParameterValue(self.COLORS)
outputFile = self.getOutputValue(self.OUTPUT_LAYER)
frequencyDistribution = self.getOutputValue(
self.FREQUENCY_DISTRIBUTION)
outputFormat = raster.formatShortNameFromFileName(outputFile)
relief = QgsRelief(inputFile, outputFile, outputFormat)
if automaticColors:
reliefColors = relief.calculateOptimizedReliefClasses()
else:
if colors is None:
raise GeoAlgorithmExecutionException(
self.
tr('Specify relief colors or activate "Generate relief classes automatically" option.'
))
reliefColors = []
for c in colors.split(';'):
v = c.split(',')
color = QgsRelief.ReliefColor(
QColor(int(v[2]), int(v[3]), int(v[4])), float(v[0]),
float(v[1]))
reliefColors.append(color)
relief.setReliefColors(reliefColors)
relief.setZFactor(zFactor)
relief.exportFrequencyDistributionToCsv(frequencyDistribution)
relief.processRaster(None)
def processAlgorithm(self, progress):
inputFile = self.getParameterValue(self.INPUT_LAYER)
zFactor = self.getParameterValue(self.Z_FACTOR)
outputFile = self.getOutputValue(self.OUTPUT_LAYER)
frequencyDistribution = self.getOutputValue(
self.FREQUENCY_DISTRIBUTION)
outputFormat = raster.formatShortNameFromFileName(outputFile)
relief = QgsRelief(inputFile, outputFile, outputFormat)
colors = relief.calculateOptimizedReliefClasses()
relief.setReliefColors(colors)
relief.setZFactor(zFactor)
relief.exportFrequencyDistributionToCsv(frequencyDistribution)
relief.processRaster(None)
def processAlgorithm(self, parameters, context, feedback):
inputFile = self.parameterAsRasterLayer(parameters, self.INPUT, context).source()
zFactor = self.parameterAsDouble(parameters, self.Z_FACTOR, context)
automaticColors = self.parameterAsBoolean(parameters, self.AUTO_COLORS, context)
outputFile = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
frequencyDistribution = self.parameterAsFileOutput(parameters, self.FREQUENCY_DISTRIBUTION, context)
outputFormat = QgsRasterFileWriter.driverForExtension(os.path.splitext(outputFile)[1])
relief = QgsRelief(inputFile, outputFile, outputFormat)
if automaticColors:
reliefColors = relief.calculateOptimizedReliefClasses()
else:
colors = ParameterReliefColors.valueToColors(parameters[self.COLORS])
if colors is None or len(colors) == 0:
raise QgsProcessingException(
self.tr('Specify relief colors or activate "Generate relief classes automatically" option.'))
reliefColors = []
for c in colors:
v = c.split(',')
color = QgsRelief.ReliefColor(QColor(int(v[2]), int(v[3]), int(v[4])),
float(v[0]),
float(v[1]))
reliefColors.append(color)
relief.setReliefColors(reliefColors)
relief.setZFactor(zFactor)
if frequencyDistribution:
relief.exportFrequencyDistributionToCsv(frequencyDistribution)
res = relief.processRaster(feedback)
if res == 1:
raise QgsProcessingException(self.tr('Can not open input file.'))
elif res == 2:
raise QgsProcessingException(self.tr('Can not get GDAL driver for output file.'))
elif res == 3:
raise QgsProcessingException(self.tr('Can not create output file.'))
elif res == 4:
raise QgsProcessingException(self.tr('Can not get input band.'))
elif res == 5:
raise QgsProcessingException(self.tr('Can not create output bands.'))
elif res == 6:
raise QgsProcessingException(self.tr('Output raster size is too small (at least 3 rows needed).'))
elif res == 7:
feedback.pushInfo(self.tr('Cancelled.'))
return {self.OUTPUT: outputFile, self.FREQUENCY_DISTRIBUTION: frequencyDistribution}
