more grass-sextante improvements (mainly fine tuning some algorithms)

Author: volaya

python/plugins/sextante/add_weights_to_r.neighbors.patch

@@ -0,0 +1,11 @@
+diff --git a/grass/description/r.neighbors.txt b/grass/description/r.neighbors.txt
+index 076ad54..5d7017e 100644
+--- a/grass/description/r.neighbors.txt
++++ b/grass/description/r.neighbors.txt
+@@ -5,4 +5,6 @@
+ ParameterSelection|method|Neighborhood operation|average;median;mode;minimum;maximum;stddev;sum;variance;diversity;interspersion
+ ParameterNumber|size|Neighborhood size|1.0|None|3
+ ParameterBoolean|-c|Use circular neighborhood|False
++*ParameterBoolean|-a|Do not align output with the input|False
++*ParameterFile|weight|File containing weights|False
+ OutputRaster|output|Name for output raster map

python/plugins/sextante/grass/GrassAlgorithm.py

@@ -269,6 +269,8 @@ def processAlgorithm(self, progress):
             elif isinstance(param, ParameterSelection):
                 idx = int(param.value)
                 command+=(" " + param.name + "=" + str(param.options[idx]));
+            elif isinstance(param, ParameterSelection):
+                command+=(" " + param.name + "=" + str(param.value));                                
             else:
                 command+=(" " + param.name + "=" + str(param.value));
 
@@ -331,7 +333,7 @@ def processAlgorithm(self, progress):
     def postProcessResults(self):        
         name = self.commandLineName().replace('.','_')[len('grass:'):]
         try:            
-            module = importlib.import_module('sextante.grass.postproc.' + name)
+            module = importlib.import_module('sextante.grass.ext.' + name)
         except ImportError:                
             return
         if hasattr(module, 'postProcessResults'):                            
@@ -396,4 +398,14 @@ def getTempFilename(self):
 
     def commandLineName(self):
         return "grass:" + self.name[:self.name.find(" ")]
+    
+    def checkParameterValuesBeforeExecuting(self):
+        name = self.commandLineName().replace('.','_')[len('grass:'):]
+        try:            
+            module = importlib.import_module('sextante.grass.ext.' + name)
+        except ImportError:                
+            return
+        if hasattr(module, 'checkParameterValuesBeforeExecuting'):                            
+            func = getattr(module,'checkParameterValuesBeforeExecuting')            
+            return func(self)
 

python/plugins/sextante/grass/description/r.cross.txt

@@ -1,6 +1,6 @@
 r.cross
 r.cross - Creates a cross product of the category values from multiple raster map layers.
 Raster (r.*)
-ParameterMultipleInput|input|Names of 2-30 input raster maps|3.0|False
+ParameterMultipleInput|input|Input raster layers|3.0|False
 ParameterBoolean|-z|Non-zero data only|False
-OutputRaster|output|Name for output raster map
+OutputRaster|output|Output layer

python/plugins/sextante/grass/description/r.neighbors.txt

@@ -5,4 +5,6 @@ ParameterRaster|input|Name of input raster map|False
 ParameterSelection|method|Neighborhood operation|average;median;mode;minimum;maximum;stddev;sum;variance;diversity;interspersion
 ParameterNumber|size|Neighborhood size|1.0|None|3
 ParameterBoolean|-c|Use circular neighborhood|False
+*ParameterBoolean|-a|Do not align output with the input|False
+*ParameterFile|weight|File containing weights|False
 OutputRaster|output|Name for output raster map

python/plugins/sextante/grass/description/v.to.rast.attribute.txt

@@ -3,5 +3,5 @@ v.to.rast.attribute - Converts (rasterize) a vector layer into a raster layer.
 Vector (v.*)
 ParameterVector|input|Input vector layer|-1|False
 ParameterSelection|use|Source of raster values|attr
-ParameterTableField|column|Name of column for 'attr' parameter (data type must be numeric)|input
+ParameterTableField|column|Name of column for 'attr' parameter (data type must be numeric)|input|0
 OutputRaster|output|Rasterized layer

python/plugins/sextante/grass/postproc/__init__.py python/plugins/sextante/grass/ext/__init__.py

@@ -27,27 +27,32 @@
 
 class ParameterFile(Parameter):
 
-    def __init__(self, name="", description="", isFolder = False):
+    def __init__(self, name="", description="", isFolder = False, optional = True):
         Parameter.__init__(self, name, description)
         self.value = None
         self.isFolder = isFolder
+        self.optional = optional
 
     def getValueAsCommandLineParameter(self):
         return "\"" + str(self.value) + "\""
 
     def serialize(self):
         return self.__module__.split(".")[-1] + "|" + self.name + "|" + self.description +\
-                        "|" + str(self.isFolder)
+                        "|" + str(self.isFolder) + "|" + str(self.optional)
 
     def setValue(self, obj):
         self.value = str(obj)
         if self.value.strip() == "":
-            return False
+            if not self.optional:
+                return False
         return True
 
     def deserialize(self, s):
         tokens = s.split("|")
-        return ParameterFile(tokens[0], tokens[1], tokens[2] == str(True))
+        if len(tokens) == 4:
+            return ParameterFile(tokens[0], tokens[1], tokens[2] == str(True), tokens[3] == str(True))
+        else:
+            return ParameterFile(tokens[0], tokens[1], tokens[2] == str(True)) 
 
     def getAsScriptCode(self):
         if self.isFolder: