name template for Math interface

Author: carlohamalainen

nipype/interfaces/minc/minc.py

@@ -1774,7 +1774,10 @@ class MathInputSpec(CommandLineInputSpec):
         desc='output file',
         argstr='%s',
         genfile=True,
-        position=-1)
+        position=-1,
+        name_source=['input_files'],
+        hash_files=False,
+        name_template='%s_mincmath.mnc')
 
     filelist = traits.File(
         desc='Specify the name of a file containing input file names.',
@@ -2173,27 +2176,6 @@ def _parse_inputs(self):
 
         return super(Math, self)._parse_inputs()
 
-    def _gen_filename(self, name):
-        if name == 'output_file':
-            output_file = self.inputs.output_file
-
-            if isdefined(output_file):
-                return os.path.abspath(output_file)
-            else:
-                return aggregate_filename(
-                    self.inputs.input_files,
-                    'mincmath_output') + '.mnc'
-        else:
-            raise NotImplemented
-
-    def _gen_outfilename(self):
-        return self._gen_filename('output_file')
-
-    def _list_outputs(self):
-        outputs = self.output_spec().get()
-        outputs['output_file'] = os.path.abspath(self._gen_outfilename())
-        return outputs
-
 
 class ResampleInputSpec(CommandLineInputSpec):
     """