| pktools 2.6.7 Processing Kernel for geospatial data

pkextract_grid.py
1# -*- coding: utf-8 -*-
2
3"""
4***************************************************************************
5 pkextract_grid.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 ParameterRaster
30 from processing.core.parameters import ParameterVector
31 from processing.core.outputs import OutputVector
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 FORMATS = [
39 'ESRI Shapefile',
40 'GeoJSON',
41 'GeoRSS',
42 'SQLite',
43 'GMT',
44 'MapInfo File',
45 'INTERLIS 1',
46 'INTERLIS 2',
47 'GML',
48 'Geoconcept',
49 'DXF',
50 'DGN',
51 'CSV',
52 'BNA',
53 'S57',
54 'KML',
55 'GPX',
56 'PGDump',
57 'GPSTrackMaker',
58 'ODS',
59 'XLSX',
60 'PDF',
61]
62EXTS = [
63 '.shp',
64 '.geojson',
65 '.xml',
66 '.sqlite',
67 '.gmt',
68 '.tab',
69 '.ili',
70 '.ili',
71 '.gml',
72 '.txt',
73 '.dxf',
74 '.dgn',
75 '.csv',
76 '.bna',
77 '.000',
78 '.kml',
79 '.gpx',
80 '.pgdump',
81 '.gtm',
82 '.ods',
83 '.xlsx',
84 '.pdf',
85]
86
87 class pkextract_grid(pktoolsAlgorithm):
88
89 INPUT = "INPUT"
90 OUTPUT = "OUTPUT"
91
92 RULE_OPTIONS = ['centroid', 'point', 'mean', 'proportion', 'custom', 'min', 'max', 'mode', 'sum', 'median', 'stdev', 'percentile']
93
94 RULE = "RULE"
95 POLYGON = "POLYGON"
96 BUFFER = "BUFFER"
97 GRID = "GRID"
98 SRCNODATA = "SRCNODATA"
99 BNDNODATA = "BNDNODATA"
100 EXTRA = 'EXTRA'
101
102 FORMAT = "FORMAT"
103
104 def cliName(self):
105 return "pkextractogr"
106
107 def defineCharacteristics(self):
108 self.name = "extract regular grid"
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))
112
113 self.addOutput(OutputVector(self.OUTPUT, 'Output vector data set'))
114 self.addParameter(ParameterSelection(self.FORMAT,
115 'Destination Format', FORMATS))
116 self.addParameter(ParameterBoolean(self.POLYGON, "Create OGRPolygon as geometry instead of OGRPoint",False))
117 self.addParameter(ParameterNumber(self.BUFFER, "Buffer for calculating statistics for point features",1,25,1))
118 self.addParameter(ParameterNumber(self.GRID, "Cell grid size (in projected units, e.g,. m)",0,1000000,1))
119
120 self.addParameter(ParameterString(self.SRCNODATA, "invalid value(s) for input raster dataset (e.g., 0;255)","none"))
121 self.addParameter(ParameterString(self.BNDNODATA, "Band(s) in input image to check if pixel is valid (e.g., 0;1)","0"))
122 self.addParameter(ParameterString(self.EXTRA, 'Additional parameters', '', optional=True))
123
124 def processAlgorithm(self, progress):
125 cliPath = '"' + os.path.join(pktoolsUtils.pktoolsPath(), self.cliName()) + '"'
126 commands = [cliPath]
127
128 input=self.getParameterValue(self.INPUT)
129 commands.append('-i')
130 commands.append('"' + input + '"')
131
132 commands.append("-r")
133 commands.append(self.RULE_OPTIONS[self.getParameterValue(self.RULE)])
134
135 output = self.getOutputFromName(self.OUTPUT)
136 outFile = output.value
137 formatIdx = self.getParameterValue(self.FORMAT)
138 outFormat = '"' + FORMATS[formatIdx] + '"'
139 commands.append('-f')
140 commands.append(outFormat)
141 ext = EXTS[formatIdx]
142 if not outFile.endswith(ext):
143 outFile += ext
144 output.value = outFile
145 commands.append('-o')
146 commands.append('"' + outFile + '"')
147
148 if self.getParameterValue(self.POLYGON):
149 commands.append("-polygon")
150 buffer=self.getParameterValue(self.BUFFER)
151 if buffer > 1:
152 commands.append("-buf")
153 commands.append(str(buffer))
154
155 if self.getParameterValue(self.GRID) > 0:
156 commands.append("-grid")
157 commands.append(str(self.getParameterValue(self.GRID)))
158
159 srcnodata=self.getParameterValue(self.SRCNODATA)
160 if srcnodata != "none":
161 srcnodataValues = srcnodata.split(';')
162 for srcnodataValue in srcnodataValues:
163 commands.append('-srcnodata')
164 commands.append(srcnodataValue)
165 bndnodata=self.getParameterValue(self.BNDNODATA)
166 bndnodataValues = bndnodata.split(';')
167 for bndnodataValue in bndnodataValues:
168 commands.append('-bndnodata')
169 commands.append(bndnodataValue)
170
171 extra = str(self.getParameterValue(self.EXTRA))
172 if len(extra) > 0:
173 commands.append(extra)
174
175 pktoolsUtils.runpktools(commands, progress)
qgis.pkextract_grid.pkextract_grid
Definition: pkextract_grid.py:87
qgis.pkextract_grid.pkextract_grid.EXTRA
string EXTRA
Definition: pkextract_grid.py:100
qgis.pkextract_grid.pkextract_grid.BUFFER
string BUFFER
Definition: pkextract_grid.py:96
qgis.pkextract_grid.pkextract_grid.SRCNODATA
string SRCNODATA
Definition: pkextract_grid.py:98
qgis.pkextract_grid.pkextract_grid.BNDNODATA
string BNDNODATA
Definition: pkextract_grid.py:99
qgis.pkextract_grid.pkextract_grid.group
group
Definition: pkextract_grid.py:109
qgis.pkextract_grid.pkextract_grid.FORMAT
string FORMAT
Definition: pkextract_grid.py:102
qgis.pkextract_grid.pkextract_grid.OUTPUT
string OUTPUT
Definition: pkextract_grid.py:90
qgis.pkextract_grid.pkextract_grid.RULE
string RULE
Definition: pkextract_grid.py:94
qgis.pkextract_grid.pkextract_grid.GRID
string GRID
Definition: pkextract_grid.py:97
qgis.pkextract_grid.pkextract_grid.name
name
Definition: pkextract_grid.py:108
qgis.pkextract_grid.pkextract_grid.INPUT
string INPUT
Definition: pkextract_grid.py:89
qgis.pkextract_grid.pkextract_grid.POLYGON
string POLYGON
Definition: pkextract_grid.py:95
qgis.pkextract_grid.pkextract_grid.cliName
def cliName(self)
Definition: pkextract_grid.py:104
qgis.pkextract_grid.pkextract_grid.RULE_OPTIONS
list RULE_OPTIONS
Definition: pkextract_grid.py:92
qgis.pktoolsAlgorithm.pktoolsAlgorithm
Definition: pktoolsAlgorithm.py:41