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[processing] add gdal interpolation (data metrics) algorithm (addresses
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| # -*- coding: utf-8 -*- | ||
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| """ | ||
| *************************************************************************** | ||
| GridDataMetrics.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.ParameterSelection import ParameterSelection | ||
| 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 GridDataMetrics(GeoAlgorithm): | ||
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| INPUT = 'INPUT' | ||
| Z_FIELD = 'Z_FIELD' | ||
| METRIC = 'METRIC' | ||
| RADIUS_1 = 'RADIUS_1' | ||
| RADIUS_2 = 'RADIUS_2' | ||
| MIN_POINTS = 'MIN_POINTS' | ||
| ANGLE = 'ANGLE' | ||
| NODATA = 'NODATA' | ||
| OUTPUT = 'OUTPUT' | ||
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| DATA_METRICS = ['Minimum', 'Maximum', 'Range', 'Count', 'Average distance', | ||
| 'Average distance between points'] | ||
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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 (Data metrics)' | ||
| 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(ParameterSelection(self.METRIC, 'Metrics', | ||
| self.DATA_METRICS, 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.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', | ||
| 0.0, 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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| metric = self.getParameterValue(self.METRIC) | ||
| if metric == 0: | ||
| params = 'minimum' | ||
| elif metric == 1: | ||
| params = 'maximum' | ||
| elif metric == 2: | ||
| params = 'range' | ||
| elif metric == 3: | ||
| params = 'count' | ||
| elif metric == 4: | ||
| params = 'average_distance' | ||
| elif metric == 5: | ||
| params = 'average_distance_pts' | ||
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| params += ':radius1=%s' % self.getParameterValue(self.RADIUS_1) | ||
| params += ':radius2=%s' % self.getParameterValue(self.RADIUS_2) | ||
| params += ':angle=%s' % self.getParameterValue(self.ANGLE) | ||
| 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) |