Add i.segment algorithm

python/plugins/processing/algs/grass7/description/i.segment.txt

@@ -0,0 +1,16 @@
+i.segment
+Identifies segments (objects) from imagery data.
+Imagery (i.*)
+ParameterMultipleInput|input|Input rasters|3|False
+ParameterNumber|threshold|Difference threshold between 0 and 1|0.0|1.0|0.5|False
+ParameterSelection|method|Segmentation method|region_growing|0
+ParameterSelection|similarity|Similarity calculation method|euclidean;manhattan|0
+ParameterNumber|minsize|Minimum number of cells in a segment|1|100000|1|True
+ParameterNumber|memory|Amount of memory to use in MB|1|None|300|True
+ParameterNumber|iterations|Maximum number of iterations|1|None|20|True
+ParameterRaster|seeds|Name for input raster map with starting seeds|True
+ParameterRaster|bounds|Name of input bounding/constraining raster map|True
+*ParameterBoolean|-d|Use 8 neighbors (3x3 neighborhood) instead of the default 4 neighbors for each pixel|False
+*ParameterBoolean|-w|Weighted input, do not perform the default scaling of input raster maps|False
+OutputRaster|output|Segmented Raster
+OutputRaster|goodness|Goodness Raster

python/plugins/processing/algs/grass7/ext/i.py

@@ -118,7 +118,7 @@ def regroupRasters(alg, field, groupField, subgroupField=None, sigsetField=None)
 
     command = 'i.group group={}{} input={}'.format(
         group.value,
-        ' subgroup={}'.format(subgroup.value) if subgroup else '',
+        ' subgroup={}'.format(subgroup.value) if subgroupField else '',
         ','.join([alg.exportedLayers[f] for f in rastersList])
     )
     alg.commands.append(command)

python/plugins/processing/algs/grass7/ext/i_segment.py

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+
+"""
+***************************************************************************
+    i_segment.py
+    ------------
+    Date                 : March 2016
+    Copyright            : (C) 2016 by Médéric Ribreux
+    Email                : medspx at medspx dot fr
+***************************************************************************
+*                                                                         *
+*   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.                                   *
+*                                                                         *
+***************************************************************************
+"""
+
+__author__ = 'Médéric Ribreux'
+__date__ = 'March 2016'
+__copyright__ = '(C) 2016, Médéric Ribreux'
+
+# This will get replaced with a git SHA1 when you do a git archive
+
+__revision__ = '$Format:%H$'
+
+from i import regroupRasters
+
+
+def processCommand(alg):
+    # Regroup rasters
+    regroupRasters(alg, 'input', 'group')

python/plugins/processing/algs/grass7/ext/i_tasscap.py

@@ -25,7 +25,7 @@
 
 __revision__ = '$Format:%H$'
 
-from i import multipleOutputDir, verifyRasterNum, regroupRasters
+from i import multipleOutputDir, verifyRasterNum
 from processing.core.parameters import getParameterFromString