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[processing] add gdal interpolation (invdist) algorithm (addresses #7201
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# -*- coding: utf-8 -*- | ||
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""" | ||
*************************************************************************** | ||
GridInvDist.py | ||
--------------------- | ||
Date : October 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. * | ||
* * | ||
*************************************************************************** | ||
""" | ||
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__author__ = 'Alexander Bruy' | ||
__date__ = 'October 2013' | ||
__copyright__ = '(C) 2013, Alexander Bruy' | ||
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# This will get replaced with a git SHA1 when you do a git archive | ||
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__revision__ = '$Format:%H$' | ||
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from PyQt4.QtGui import * | ||
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from processing.core.GeoAlgorithm import GeoAlgorithm | ||
from processing.parameters.ParameterVector import ParameterVector | ||
from processing.parameters.ParameterTableField import ParameterTableField | ||
from processing.parameters.ParameterNumber import ParameterNumber | ||
from processing.outputs.OutputRaster import OutputRaster | ||
from processing.gdal.GdalUtils import GdalUtils | ||
from processing.tools.system import * | ||
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class GridInvDist(GeoAlgorithm): | ||
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INPUT = 'INPUT' | ||
Z_FIELD = 'Z_FIELD' | ||
POWER = 'POWER' | ||
SMOTHING = 'SMOTHING' | ||
RADIUS_1 = 'RADIUS_1' | ||
RADIUS_2 = 'RADIUS_2' | ||
MAX_POINTS = 'MAX_POINTS' | ||
MIN_POINTS = 'MIN_POINTS' | ||
ANGLE = 'ANGLE' | ||
NODATA = 'NODATA' | ||
OUTPUT = 'OUTPUT' | ||
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#def getIcon(self): | ||
# filepath = os.path.dirname(__file__) + '/icons/dem.png' | ||
# return QIcon(filepath) | ||
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def defineCharacteristics(self): | ||
self.name = 'Grid (Inverse distance to a power)' | ||
self.group = '[GDAL] Analysis' | ||
self.addParameter(ParameterVector(self.INPUT, 'Input layer', | ||
[ParameterVector.VECTOR_TYPE_POINT])) | ||
self.addParameter(ParameterTableField(self.Z_FIELD, 'Z field', | ||
self.INPUT, ParameterTableField.DATA_TYPE_NUMBER, | ||
True)) | ||
self.addParameter(ParameterNumber(self.POWER, 'Power', 0, 100.0, 2.0)) | ||
self.addParameter(ParameterNumber(self.SMOTHING, 'Smothing', | ||
0.0, 99999999.999999, 0.0)) | ||
self.addParameter(ParameterNumber(self.RADIUS_1, 'Radius 1', | ||
0.0, 99999999.999999, 0.0)) | ||
self.addParameter(ParameterNumber(self.RADIUS_2, 'Radius 2', | ||
0.0, 99999999.999999, 0.0)) | ||
self.addParameter(ParameterNumber(self.MAX_POINTS, 'Max points', | ||
0.0, 99999999.999999, 0.0)) | ||
self.addParameter(ParameterNumber(self.MIN_POINTS, 'Min points', | ||
0.0, 99999999.999999, 0.0)) | ||
self.addParameter(ParameterNumber(self.ANGLE, 'Angle', | ||
0.0, 359.0, 0.0)) | ||
self.addParameter(ParameterNumber(self.NODATA, 'Nodata', | ||
-99999999.999999, 99999999.999999, 0.0)) | ||
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self.addOutput(OutputRaster(self.OUTPUT, 'Output file')) | ||
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def processAlgorithm(self, progress): | ||
arguments = ['-l'] | ||
arguments.append( | ||
os.path.basename(os.path.splitext( | ||
unicode(self.getParameterValue(self.INPUT)))[0])) | ||
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fieldName = self.getParameterValue(self.Z_FIELD) | ||
if fieldName is not None and fieldName != '': | ||
arguments.append('-zfield') | ||
arguments.append(fieldName) | ||
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params = 'invdist' | ||
params += ':power=%s' % self.getParameterValue(self.POWER) | ||
params += ':smothing=%s' % self.getParameterValue(self.SMOTHING) | ||
params += ':radius1=%s' % self.getParameterValue(self.RADIUS_1) | ||
params += ':radius2=%s' % self.getParameterValue(self.RADIUS_2) | ||
params += ':angle=%s' % self.getParameterValue(self.ANGLE) | ||
params += ':max_points=%s' % self.getParameterValue(self.MAX_POINTS) | ||
params += ':min_points=%s' % self.getParameterValue(self.MIN_POINTS) | ||
params += ':nodata=%s' % self.getParameterValue(self.NODATA) | ||
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arguments.append('-a') | ||
arguments.append(params) | ||
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arguments.append(unicode(self.getParameterValue(self.INPUT))) | ||
arguments.append(unicode(self.getOutputValue(self.OUTPUT))) | ||
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GdalUtils.runGdal(['gdal_grid', | ||
GdalUtils.escapeAndJoin(arguments)], progress) |