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141 lines
5.7 KiB
Python
141 lines
5.7 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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sieve.py
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---------------------
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Date : August 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Victor Olaya'
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__date__ = 'August 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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import os
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from qgis.PyQt.QtGui import QIcon
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from qgis.core import (QgsRasterFileWriter,
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QgsProcessingException,
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QgsProcessingParameterDefinition,
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QgsProcessingParameterRasterLayer,
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QgsProcessingParameterNumber,
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QgsProcessingParameterBoolean,
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QgsProcessingParameterString,
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QgsProcessingParameterRasterDestination)
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from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
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from processing.tools.system import isWindows
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from processing.algs.gdal.GdalUtils import GdalUtils
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pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
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class sieve(GdalAlgorithm):
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INPUT = 'INPUT'
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THRESHOLD = 'THRESHOLD'
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EIGHT_CONNECTEDNESS = 'EIGHT_CONNECTEDNESS'
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NO_MASK = 'NO_MASK'
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MASK_LAYER = 'MASK_LAYER'
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EXTRA = 'EXTRA'
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OUTPUT = 'OUTPUT'
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def __init__(self):
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super().__init__()
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def initAlgorithm(self, config=None):
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self.addParameter(QgsProcessingParameterRasterLayer(self.INPUT, self.tr('Input layer')))
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self.addParameter(QgsProcessingParameterNumber(self.THRESHOLD,
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self.tr('Threshold'),
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type=QgsProcessingParameterNumber.Integer,
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minValue=0,
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defaultValue=10))
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self.addParameter(QgsProcessingParameterBoolean(self.EIGHT_CONNECTEDNESS,
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self.tr('Use 8-connectedness'),
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defaultValue=False))
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self.addParameter(QgsProcessingParameterBoolean(self.NO_MASK,
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self.tr('Do not use the default validity mask for the input band'),
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defaultValue=False))
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self.addParameter(QgsProcessingParameterRasterLayer(self.MASK_LAYER,
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self.tr('Validity mask'),
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optional=True))
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extra_param = QgsProcessingParameterString(self.EXTRA,
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self.tr('Additional command-line parameters'),
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defaultValue=None,
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optional=True)
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extra_param.setFlags(extra_param.flags() | QgsProcessingParameterDefinition.FlagAdvanced)
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self.addParameter(extra_param)
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self.addParameter(QgsProcessingParameterRasterDestination(self.OUTPUT, self.tr('Sieved')))
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def name(self):
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return 'sieve'
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def displayName(self):
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return self.tr('Sieve')
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def group(self):
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return self.tr('Raster analysis')
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def groupId(self):
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return 'rasteranalysis'
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def icon(self):
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return QIcon(os.path.join(pluginPath, 'images', 'gdaltools', 'sieve.png'))
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def commandName(self):
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return 'gdal_sieve'
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def getConsoleCommands(self, parameters, context, feedback, executing=True):
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arguments = []
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arguments.append('-st')
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arguments.append(str(self.parameterAsInt(parameters, self.THRESHOLD, context)))
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if self.parameterAsBoolean(parameters, self.EIGHT_CONNECTEDNESS, context):
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arguments.append('-8')
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else:
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arguments.append('-4')
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if self.parameterAsBoolean(parameters, self.NO_MASK, context):
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arguments.append('-nomask')
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mask = self.parameterAsRasterLayer(parameters, self.MASK_LAYER, context)
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if mask:
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arguments.append('-mask')
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arguments.append(mask.source())
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out = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
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self.setOutputValue(self.OUTPUT, out)
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arguments.append('-of')
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arguments.append(QgsRasterFileWriter.driverForExtension(os.path.splitext(out)[1]))
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if self.EXTRA in parameters and parameters[self.EXTRA] not in (None, ''):
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extra = self.parameterAsString(parameters, self.EXTRA, context)
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arguments.append(extra)
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raster = self.parameterAsRasterLayer(parameters, self.INPUT, context)
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if raster is None:
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raise QgsProcessingException(self.invalidRasterError(parameters, self.INPUT))
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arguments.append(raster.source())
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arguments.append(out)
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if isWindows():
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commands = ["python3", "-m", self.commandName()]
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else:
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commands = [self.commandName() + '.py']
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commands.append(GdalUtils.escapeAndJoin(arguments))
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return commands
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