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# -*- coding: utf-8 -*-
"""
***************************************************************************
polygonize.py
---------------------
Date : August 2012
Copyright : (C) 2012 by Victor Olaya
Email : volayaf at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""
__author__ = 'Victor Olaya'
__date__ = 'August 2012'
__copyright__ = '(C) 2012, Victor Olaya'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
from PyQt4 import QtCore
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.parameters.ParameterRaster import ParameterRaster
from processing.parameters.ParameterString import ParameterString
from processing.outputs.OutputVector import OutputVector
from processing.tools.system import *
from processing.algs.gdal.GdalUtils import GdalUtils
class polygonize(GdalAlgorithm):
INPUT = 'INPUT'
OUTPUT = 'OUTPUT'
FIELD = 'FIELD'
def commandLineName(self):
return "gdalogr:polygonize"
def defineCharacteristics(self):
self.name = 'Polygonize (raster to vector)'
self.group = '[GDAL] Conversion'
self.addParameter(ParameterRaster(polygonize.INPUT, 'Input layer',
False))
self.addParameter(ParameterString(polygonize.FIELD, 'Output field name'
, 'DN'))
self.addOutput(OutputVector(polygonize.OUTPUT, 'Output layer'))
def processAlgorithm(self, progress):
arguments = []
arguments.append(self.getParameterValue(polygonize.INPUT))
arguments.append('-f')
arguments.append('ESRI Shapefile')
output = self.getOutputValue(polygonize.OUTPUT)
arguments.append(output)
arguments.append(QtCore.QFileInfo(output).baseName())
arguments.append(self.getParameterValue(polygonize.FIELD))
commands = []
if isWindows():
commands = ['cmd.exe', '/C ', 'gdal_polygonize.bat',
GdalUtils.escapeAndJoin(arguments)]
else:
commands = ['gdal_polygonize.py',
GdalUtils.escapeAndJoin(arguments)]
GdalUtils.runGdal(commands, progress)
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