[Dune] suggestion for example adaptivefinitevolume.cc

[Matteo Semplice]

On 26/11/2011 17:57, Dedner, Andreas wrote:
>
> Thanks, such suggestion in improving the howto code is greatly 
> appreciated.
> Added them to the trunk.
> Do you also have a suggestion for what to add to the dunecontrol 
> documentation
> to avoid the difficulties you had?
>
> Best
> Andreas
>
Here is another one about the same exmaple code. VTK output has 
extension ".vtp" for one dimensional grids, so it's better to extract 
the actual file name from vtkwriter.write:

--- /home/matteo/dune2.1/dune-grid-howto-2.1.0/vtkout.hh        
2011-04-29 17:31:53.000000000 +0200
+++ vtkout.hh   2011-11-26 18:36:49.000000000 +0100
@@ -9,16 +9,18 @@
  {
    Dune::VTKWriter<typename G::LeafGridView> vtkwriter(grid.leafView());
    char fname[128];
+  std::string fullname;
    char sername[128];
+
    sprintf(fname,"%s-%05d",name,k);
    sprintf(sername,"%s.series",name);
    vtkwriter.addCellData(c,"celldata");
-  vtkwriter.write(fname,Dune::VTKOptions::ascii);
+  fullname = vtkwriter.write(fname,Dune::VTKOptions::ascii);

    if ( rank == 0)
    {
      std::ofstream serstream(sername, (k==0 ? std::ios_base::out : 
std::ios_base::app));
-    serstream << k << " " << fname << ".vtu " << time << std::endl;
+    serstream << k << " " << fullname << " " << time << std::endl;
      serstream.close();
    }
  }

Actually one could reuse the fname variable, but I always get confused 
by char*, std:strings and string streams, so I didn't try...

Also, I'm not sure where the writePVD script is to be found (it's 
nowhere on my system!), but, in case it's really missing, the following 
does the job:

#!/usr/bin/awk  -f
BEGIN{
     print "<?xml version=\"1.0\"?>" ;
     print "<VTKFile type=\"Collection\" version=\"0.1\" 
byte_order=\"LittleEndian\">";
     print "<Collection>";
}
{
     print "<DataSet timestep=\"" $3 "\"  file=\"" $2 "\"/>";
}
END{
     print "</Collection>";
     print "</VTKFile>";
}





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Matteo Semplice				Dip. di Fisica e Matematica
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