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rasterize.py
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rasterize.py
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# -*- coding: utf-8 -*-
"""
***************************************************************************
rasterize.py
---------------------
Date : September 2013
Copyright : (C) 2013 by Alexander Bruy
Email : alexander dot bruy 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. *
* *
***************************************************************************
"""
from builtins import str
__author__ = 'Alexander Bruy'
__date__ = 'September 2013'
__copyright__ = '(C) 2013, Alexander Bruy'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
import os
from qgis.PyQt.QtGui import QIcon
from processing.core.parameters import (ParameterVector,
ParameterExtent,
ParameterTableField,
ParameterSelection,
ParameterNumber,
ParameterString)
from processing.core.outputs import OutputRaster
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.algs.gdal.GdalUtils import GdalUtils
from processing.tools.vector import ogrConnectionString, ogrLayerName
pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
class rasterize(GdalAlgorithm):
INPUT = 'INPUT'
FIELD = 'FIELD'
DIMENSIONS = 'DIMENSIONS'
WIDTH = 'WIDTH'
HEIGHT = 'HEIGHT'
NO_DATA = 'NO_DATA'
RTYPE = 'RTYPE'
OPTIONS = 'OPTIONS'
OUTPUT = 'OUTPUT'
TYPE = ['Byte', 'Int16', 'UInt16', 'UInt32', 'Int32', 'Float32', 'Float64']
RAST_EXT = 'RAST_EXT'
def icon(self):
return QIcon(os.path.join(pluginPath, 'images', 'gdaltools', 'rasterize.png'))
def __init__(self):
super().__init__()
self.addParameter(ParameterVector(self.INPUT, self.tr('Input layer')))
self.addParameter(ParameterTableField(self.FIELD,
self.tr('Attribute field'), self.INPUT))
self.addParameter(ParameterSelection(self.DIMENSIONS,
self.tr('Set output raster size (ignored if above option is checked)'),
['Output size in pixels', 'Output resolution in map units per pixel'], 1))
self.addParameter(ParameterNumber(self.WIDTH,
self.tr('Horizontal'), 0.0, 99999999.999999, 100.0))
self.addParameter(ParameterNumber(self.HEIGHT,
self.tr('Vertical'), 0.0, 99999999.999999, 100.0))
self.addParameter(ParameterExtent(self.RAST_EXT, self.tr('Raster extent')))
self.addParameter(ParameterString(self.NO_DATA,
self.tr("Nodata value"),
'', optional=True))
self.addParameter(ParameterString(self.OPTIONS,
self.tr('Additional creation options'),
optional=True,
metadata={'widget_wrapper': 'processing.algs.gdal.ui.RasterOptionsWidget.RasterOptionsWidgetWrapper'}))
self.addParameter(ParameterSelection(self.RTYPE,
self.tr('Raster type'),
self.TYPE, 5))
self.addOutput(OutputRaster(self.OUTPUT,
self.tr('Rasterized')))
def name(self):
return 'rasterize'
def displayName(self):
return self.tr('Rasterize (vector to raster)')
def group(self):
return self.tr('Vector conversion')
def getConsoleCommands(self, parameters):
inLayer = self.getParameterValue(self.INPUT)
noData = self.getParameterValue(self.NO_DATA)
rastext = str(self.getParameterValue(self.RAST_EXT))
if not rastext:
rastext = QgsProcessingUtils.combineLayerExtents([inLayer])
opts = self.getParameterValue(self.OPTIONS)
out = self.getOutputValue(self.OUTPUT)
ogrLayer = ogrConnectionString(inLayer)[1:-1]
if noData is not None:
noData = str(noData)
arguments = []
arguments.append('-a')
arguments.append(str(self.getParameterValue(self.FIELD)))
arguments.append('-ot')
arguments.append(self.TYPE[self.getParameterValue(self.RTYPE)])
dimType = self.getParameterValue(self.DIMENSIONS)
arguments.append('-of')
arguments.append(GdalUtils.getFormatShortNameFromFilename(out))
regionCoords = rastext.split(',')
try:
rastext = []
rastext.append('-te')
rastext.append(regionCoords[0])
rastext.append(regionCoords[2])
rastext.append(regionCoords[1])
rastext.append(regionCoords[3])
except IndexError:
rastext = []
if rastext:
arguments.extend(rastext)
if dimType == 0:
# size in pixels
arguments.append('-ts')
arguments.append(str(self.getParameterValue(self.WIDTH)))
arguments.append(str(self.getParameterValue(self.HEIGHT)))
else:
# resolution in map units per pixel
arguments.append('-tr')
arguments.append(str(self.getParameterValue(self.WIDTH)))
arguments.append(str(self.getParameterValue(self.HEIGHT)))
if noData and len(noData) > 0:
arguments.append('-a_nodata')
arguments.append(noData)
if opts:
arguments.append('-co')
arguments.append(opts)
arguments.append('-l')
print(ogrLayerName(inLayer))
arguments.append(ogrLayerName(inLayer))
arguments.append(ogrLayer)
arguments.append(out)
return ['gdal_rasterize', GdalUtils.escapeAndJoin(arguments)]
def commandName(self):
return "gdal_rasterize"