pktools  2.6.7
Processing Kernel for geospatial data
pkreclass.py
1 # -*- coding: utf-8 -*-
2 
3 """
4 ***************************************************************************
5  pkreclass.py
6  ---------------------
7  Date : April 2015
8  Copyright : (C) 2015 by Pieter Kempeneers
9  Email : kempenep at gmail dot com
10 ***************************************************************************
11 * *
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. *
16 * *
17 ***************************************************************************
18 """
19 
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__ = '$Format:%H$'
25 
26 import os
27 from pktoolsUtils import pktoolsUtils
28 from pktoolsAlgorithm import pktoolsAlgorithm
29 from processing.core.parameters import ParameterMultipleInput
30 from processing.core.parameters import ParameterRaster
31 from processing.core.outputs import OutputRaster
32 from processing.core.parameters import ParameterSelection
33 from processing.core.parameters import ParameterNumber
34 from processing.core.parameters import ParameterString
35 from processing.core.parameters import ParameterBoolean
36 from processing.core.parameters import ParameterExtent
37 
38 class pkreclass(pktoolsAlgorithm):
39 
40  INPUT = "INPUT"
41  OUTPUT = "OUTPUT"
42  CLASS = "CLASS"
43  BAND = "BAND"
44  RECLASS = "RECLASS"
45  MASK = "MASK"
46  MSKNODATA = "MSKNODATA"
47  NODATA = "NODATA"
48  RTYPE = 'RTYPE'
49  TYPE = ['none', 'Byte','Int16','UInt16','UInt32','Int32','Float32','Float64','CInt16','CInt32','CFloat32','CFloat64']
50  EXTRA = 'EXTRA'
51 
52  def cliName(self):
53  return "pkreclass"
54 
55  def defineCharacteristics(self):
56  self.name = "reclass raster datasets"
57  self.group = "[pktools] raster"
58  self.addParameter(ParameterMultipleInput(self.INPUT, 'Input layer raster data set',ParameterMultipleInput.TYPE_RASTER))
59  self.addOutput(OutputRaster(self.OUTPUT, "Output raster data set"))
60  self.addParameter(ParameterString(self.BAND, "Band index(es) to replace, e.g., 0;1;2 (other bands are copied to output)", '0'))
61  self.addParameter(ParameterRaster(self.MASK, "Mask raster dataset",optional=True))
62  self.addParameter(ParameterString(self.MSKNODATA, "Mask value(s) not to consider for classification (e.g., 0;255)","0"))
63  self.addParameter(ParameterString(self.CLASS, "list of classes to reclass, in combination with reclass option, e.g., 0;1;2;3",""))
64  self.addParameter(ParameterString(self.RECLASS, "list of recoded classes, in combination with class option e.g., 10;11;12;13",""))
65  self.addParameter(ParameterNumber(self.NODATA, "nodata value to put in image if not valid",0,None,0))
66 
67  self.addParameter(ParameterSelection(self.RTYPE, 'Output raster type (leave as none to keep original type)', self.TYPE, 0))
68  self.addParameter(ParameterString(self.EXTRA,
69  'Additional parameters', '-of GTiff', optional=True))
70 
71  def processAlgorithm(self, progress):
72  cliPath = '"' + os.path.join(pktoolsUtils.pktoolsPath(), self.cliName()) + '"'
73  commands = [cliPath]
74 
75  input=self.getParameterValue(self.INPUT)
76  commands.append('-i')
77  commands.append('"' + input + '"')
78 
79  if self.TYPE[self.getParameterValue(self.RTYPE)] != "none":
80  commands.append('-ot')
81  commands.append(self.TYPE[self.getParameterValue(self.RTYPE)])
82 
83  output=self.getOutputValue(self.OUTPUT)
84  commands.append("-o")
85  commands.append('"' + output + '"')
86 
87  commands.append('-nodata')
88  commands.append(str(self.getParameterValue(self.NODATA)))
89 
90  band=str(self.getParameterValue(self.BAND))
91  if band != '':
92  bandValues = band.split(';')
93  for bandValue in bandValues:
94  commands.append('-b')
95  commands.append(bandValue)
96 
97  theclass=str(self.getParameterValue(self.CLASS))
98  if theclass != '':
99  classValues = theclass.split(';')
100  for classValue in classValues:
101  commands.append('-c')
102  commands.append(classValue)
103  reclass=str(self.getParameterValue(self.RECLASS))
104  if reclass != '':
105  reclassValues = reclass.split(';')
106  for reclassValue in reclassValues:
107  commands.append('-r')
108  commands.append(reclassValue)
109 
110  mask = str(self.getParameterValue(self.MASK))
111  if mask != "None":
112  commands.append('-m')
113  commands.append(mask)
114  msknodata=str(self.getParameterValue(self.MSKNODATA))
115  msknodataValues = msknodata.split(';')
116  for msknodataValue in msknodataValues:
117  commands.append('-msknodata')
118  commands.append(msknodataValue)
119 
120  extra = str(self.getParameterValue(self.EXTRA))
121  if len(extra) > 0:
122  commands.append(extra)
123 
124  pktoolsUtils.runpktools(commands, progress)