4***************************************************************************
8 Copyright : (C) 2015 by Pieter Kempeneers
9 Email : kempenep at gmail dot com
10***************************************************************************
12* This program is free software; you can redistribute it
and/
or modify *
13* it under the terms of the GNU General Public License
as published by *
14* the Free Software Foundation; either version 2 of the License,
or *
15* (at your option) any later version. *
17***************************************************************************
20__author__ = 'Pieter Kempeneers'
21__date__ = 'April 2015'
22__copyright__ = '(C) 2015, Pieter Kempeneers'
23# This will get replaced with a git SHA1 when you do a git archive
24__revision__ = '$Format:%H$'
27from pktoolsUtils import pktoolsUtils
28from pktoolsAlgorithm import pktoolsAlgorithm
29from processing.core.parameters import ParameterRaster
30from processing.core.parameters import ParameterVector
31from processing.core.outputs import OutputVector
32from processing.core.parameters import ParameterSelection
33from processing.core.parameters import ParameterNumber
34from processing.core.parameters import ParameterString
35from processing.core.parameters import ParameterBoolean
36from processing.core.parameters import ParameterExtent
92 RULE_OPTIONS = [
'centroid',
'point',
'mean',
'proportion',
'custom',
'min',
'max',
'mode',
'sum',
'median',
'stdev',
'percentile']
98 SRCNODATA =
"SRCNODATA"
99 BNDNODATA =
"BNDNODATA"
105 return "pkextractogr"
107 def defineCharacteristics(self):
108 self.
name =
"extract random points"
109 self.
group =
"[pktools] raster/vector"
110 self.addParameter(ParameterRaster(self.
INPUT,
'Input raster data set'))
111 self.addParameter(ParameterSelection(self.
RULE,
"extraction rule",self.
RULE_OPTIONS, 0))
113 self.addOutput(OutputVector(self.
OUTPUT,
'Output vector data set'))
114 self.addParameter(ParameterSelection(self.
FORMAT,
115 'Destination Format', FORMATS))
117 self.addParameter(ParameterBoolean(self.
POLYGON,
"Create OGRPolygon as geometry instead of OGRPoint",
False))
118 self.addParameter(ParameterNumber(self.
BUFFER,
"Buffer for calculating statistics for point features",1,25,1))
119 self.addParameter(ParameterNumber(self.
RANDOM,
"Number of random points to generate",0,1000000,100))
121 self.addParameter(ParameterString(self.
SRCNODATA,
"invalid value(s) for input raster dataset (e.g., 0;255)",
"none"))
122 self.addParameter(ParameterString(self.
BNDNODATA,
"Band(s) in input image to check if pixel is valid (e.g., 0;1)",
"0"))
123 self.addParameter(ParameterString(self.
EXTRA,
124 'Additional parameters',
'', optional=
True))
126 def processAlgorithm(self, progress):
127 cliPath =
'"' + os.path.join(pktoolsUtils.pktoolsPath(), self.
cliName()) +
'"'
130 input=self.getParameterValue(self.
INPUT)
131 commands.append(
'-i')
132 commands.append(
'"' + input +
'"')
134 commands.append(
"-r")
137 output = self.getOutputFromName(self.
OUTPUT)
138 outFile = output.value
139 formatIdx = self.getParameterValue(self.
FORMAT)
140 outFormat =
'"' + FORMATS[formatIdx] +
'"'
141 commands.append(
'-f')
142 commands.append(outFormat)
143 ext = EXTS[formatIdx]
144 if not outFile.endswith(ext):
146 output.value = outFile
147 commands.append(
'-o')
148 commands.append(
'"' + outFile +
'"')
150 if self.getParameterValue(self.
POLYGON):
151 commands.append(
"-polygon")
152 buffer=self.getParameterValue(self.
BUFFER)
154 commands.append(
"-buf")
155 commands.append(str(buffer))
157 if self.getParameterValue(self.
RANDOM) > 0:
158 commands.append(
"-rand")
159 commands.append(str(self.getParameterValue(self.
RANDOM)))
161 srcnodata=self.getParameterValue(self.
SRCNODATA)
162 if srcnodata !=
"none":
163 srcnodataValues = srcnodata.split(
';')
164 for srcnodataValue
in srcnodataValues:
165 commands.append(
'-srcnodata')
166 commands.append(srcnodataValue)
167 bndnodata=self.getParameterValue(self.
BNDNODATA)
168 bndnodataValues = bndnodata.split(
';')
169 for bndnodataValue
in bndnodataValues:
170 commands.append(
'-bndnodata')
171 commands.append(bndnodataValue)
173 extra = str(self.getParameterValue(self.
EXTRA))
175 commands.append(extra)
178 pktoolsUtils.runpktools(commands, progress)