vtk writer again checks for small numbers to enable output in paraview.

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@6356 2fb0f335-1f38-0410-981e-8018bf24f1b0

dumux/io/vtkmultiwriter.hh

@@ -197,6 +197,8 @@ public:
     template <class DataBuffer>
     void attachVertexData(DataBuffer &buf, const char *name, int nComps=1)
     {
+        sanitizeBuffer_(buf, nComps);
+
         typedef typename VtkWriter::VTKFunctionPtr FunctionPtr;
         typedef Dumux::VtkNestedFunction<Grid, VertexMapper, DataBuffer> VtkFn;
         FunctionPtr fnPtr(new VtkFn(name,
@@ -235,6 +237,8 @@ public:
     template <class DataBuffer>
     void attachCellData(DataBuffer &buf, const char *name, int nComps = 1)
     {
+        sanitizeBuffer_(buf, nComps);
+
         typedef typename VtkWriter::VTKFunctionPtr FunctionPtr;
         typedef Dumux::VtkNestedFunction<Grid, ElementMapper, DataBuffer> VtkFn;
         FunctionPtr fnPtr(new VtkFn(name,