output file name now contains both position and mode.

e.g. ${prefix}_ipinitialcoord(point).vtr

processing/post/vtk_rectilinearGrid.py

@@ -100,7 +100,8 @@ for name in filenames:
     (directory,filename) = os.path.split(name)
     writer.SetDataModeToBinary()
     writer.SetCompressorTypeToZLib()
-    writer.SetFileName(os.path.join(directory,os.path.splitext(filename)[0]+'_{}'.format(options.mode) \
+    writer.SetFileName(os.path.join(directory,os.path.splitext(filename)[0] \
+                                        +'_{}({})'.format(options.position, options.mode) \
                                         +'.'+writer.GetDefaultFileExtension()))
   else:
     writer = vtk.vtkDataSetWriter()