Fixed bug

When the tpm files came from different folders, but with the same
basename, the output was iteratively overwritten, and the output
array pointed three times to the same filename, and thus it did not
crash.

Now, when using automatic name generation for outputs, the index is
always added to prevent this undesired situation.

Author: oesteban

nipype/algorithms/misc.py

@@ -1252,7 +1252,8 @@ def _list_outputs(self):
 
 
 def normalize_tpms( in_files, in_mask=None, out_files=[] ):
-    """ Returns the input tissue probability maps (tpms, aka volume fractions)
+    """
+    Returns the input tissue probability maps (tpms, aka volume fractions)
     normalized to sum up 1.0 at each voxel within the mask.
     """
     import nibabel as nib
@@ -1261,17 +1262,17 @@ def normalize_tpms( in_files, in_mask=None, out_files=[] ):
 
     in_files = np.atleast_1d( in_files ).tolist()
 
-    if len( out_files )!=len(in_files):
+    if len(out_files)!=len(in_files):
         for i,finname in enumerate( in_files ):
             fname,fext = op.splitext( op.basename( finname ) )
             if fext == '.gz':
                 fname,fext2 = op.splitext( fname )
                 fext = fext2 + fext
 
-            out_file = op.abspath( fname+'_norm'+fext )
-            out_files+= [ out_file ]
+            out_file = op.abspath(fname+'_norm'+('_%02d' % i)+fext)
+            out_files+= [out_file]
 
-    imgs = [ nib.load(fim) for fim in in_files ]
+    imgs = [nib.load(fim) for fim in in_files]
 
     if len(in_files)==1:
         img_data = imgs[0].get_data()