Add i.smap algorithm

Author: Médéric Ribreux

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

@@ -0,0 +1,9 @@
+i.smap
+Performs contextual image classification using sequential maximum a posteriori (SMAP) estimation.
+Imagery (i.*)
+ParameterMultipleInput|input|Input rasters|3|False
+ParameterFile|signaturefile|Name of input file containing signatures|False|False
+ParameterNumber|blocksize|Size of submatrix to process at one time|1|None|1024|True
+*ParameterBoolean|-m|Use maximum likelihood estimation (instead of smap)|False
+OutputRaster|output|Classification
+OutputRaster|goodness|Goodness_of_fit

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

@@ -27,6 +27,8 @@
 
 from processing.core.parameters import ParameterRaster, getParameterFromString
 from processing.tools.system import isWindows
+from ..Grass7Utils import Grass7Utils
+from os import path
 
 
 def multipleOutputDir(alg, field, basename=None):
@@ -92,9 +94,12 @@ def orderedInput(alg, inputParameter, targetParameterDef):
     return rootFilename
 
 
-def regroupRasters(alg, field, groupField, subgroupField=None):
+def regroupRasters(alg, field, groupField, subgroupField=None, sigsetField=None):
     """
     Group multiple input rasters into a group
+    * If there is a subgroupField, a subgroup will automatically created.
+    * When a sigset file is provided, the file is copied into the sigset
+      directory of the subgroup.
     """
     # List of rasters names
     rasters = alg.getParameterFromName(field)
@@ -118,6 +123,19 @@ def regroupRasters(alg, field, groupField, subgroupField=None):
     )
     alg.commands.append(command)
 
+    # If there is a sigset and a subgroupField, we copy the sigset file
+    if subgroupField and sigsetField:
+        sigsetFile = alg.getParameterValue(sigsetField)
+        shortSigsetFile = path.basename(sigsetFile)
+        if sigsetFile:
+            interSigsetFile = path.join(Grass7Utils.grassMapsetFolder(),
+                                        'PERMANENT',
+                                        'group', group.value,
+                                        'subgroup', subgroup.value,
+                                        'sigset', shortSigsetFile)
+            copyFile(alg, sigsetFile, interSigsetFile)
+            alg.setParameterValue(sigsetField, shortSigsetFile)
+
     # modify parameters values
     alg.processCommand()
 
@@ -127,8 +145,6 @@ def regroupRasters(alg, field, groupField, subgroupField=None):
     alg.parameters.remove(group)
     if subgroupField:
         alg.parameters.remove(subgroup)
-
-    if subgroupField:
         return group.value, subgroup.value
 
     return group.value
@@ -176,10 +192,32 @@ def file2Output(alg, output):
     return outputFile
 
 
+def createDestDir(alg, toFile):
+    """ Generates an mkdir command for GRASS7 script """
+    # Creates the destination directory
+    command = "{} {}".format(
+        "MD" if isWindows() else "mkdir -p",
+        path.dirname(toFile)
+    )
+    alg.commands.append(command)
+
+
 def moveFile(alg, fromFile, toFile):
-    # move the file
-    if isWindows():
-        command = "MOVE /Y {} {}".format(fromFile, toFile)
-    else:
-        command = "mv -f {} {}".format(fromFile, toFile)
+    """ Generates a move command for GRASS7 script """
+    createDestDir(alg, toFile)
+    command = "{} {} {}".format(
+        "MOVE /Y" if isWindows() else "mv -f",
+        fromFile,
+        toFile
+    )
+    alg.commands.append(command)
+
+
+def copyFile(alg, fromFile, toFile):
+    """ Generates a copy command for GRASS7 script """
+    createDestDir(alg, toFile)
+    command = "{} {} {}".format(
+        "COPY /Y" if isWindows() else "cp -f",
+        fromFile,
+        toFile)
     alg.commands.append(command)

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

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+
+"""
+***************************************************************************
+    i_smap.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, file2Output
+
+
+def processCommand(alg):
+    # Regroup rasters
+    regroupRasters(alg, 'input', 'group', 'subgroup', 'signaturefile')