RES: [vtkusers] Re: Translating Ensight to VTK transient data...

[Renato N. Elias]

Hi Goodwin,

thanks a lot for your help. 

In fact, I firstly tried to extract the number of time steps as you did
since it would be easier to perform a loop over the time steps instead of
the time values. My problem was that vtk returned me an error in
GetNumberOfItems method. With your script I got the same error message:

Object named: vtkTemp2, could not find requested method: GetNumberOfItems or
the method was called with incorrect arguments.

while executing
"$timeSteps GetNumberOfItems"
   invoked from within
"set numTimeSteps [$timeSteps GetNumberOfItems]"
(file "ens2vtk.tcl" line 24)

do you know how to work out it?!

Regards

Renato.
 

-----Mensagem original-----
De: vtkusers-bounces+rnelias=nacad.ufrj.br at vtk.org
[mailto:vtkusers-bounces+rnelias=nacad.ufrj.br at vtk.org] Em nome de Goodwin
Lawlor
Enviada em: terça-feira, 26 de setembro de 2006 19:59
Para: vtkusers at public.kitware.com
Assunto: [vtkusers] Re: Translating Ensight to VTK transient data...

Renato N. Elias wrote:
> Hi everybody,
> 
> here it's me again struggling with my Ensight files ;o)
> 
> I'm still trying to write a script to load an Ensight case file and 
> export the corresponding VTK file for each time step. My problem is 
> that I can't realize how to sweep the time steps loaded from the 
> casefile. I found the SetTimeValue method but I don't know how to select
the next time step yet.
> Does anybody more experienced with VTK+TCL could give me a hand? The 
> script is the following:
> 
<snip>

Hi Renato,

Try this:


package require vtk

# loading command line arguments
set arch  [lindex $argv 0]

# building the filename
set    casefile $arch.case
puts " Reading Ensight casefile $casefile"

# defining the Ensight's reader and VTK writer vtkGenericEnSightReader
reader
    reader SetCaseFileName $casefile
    reader Update

# define the vtk file object
vtkXMLUnstructuredGridWriter vtkfile
    vtkfile SetInput [ reader GetOutput ]

# find the time steps
set tSets [reader GetTimeSets]
$tSets InitTraversal
set timeSteps [$tSets GetNextItem]
set numTimeSteps [$timeSteps GetNumberOfItems]

# loop over time steps
for {set nfile 0} {$nfile < $numTimeSteps} {incr nfile} {

       # building the vtk filename
       set vtkfilename [format "%02d$arch.vtk" $nfile]

       # set the time step
       set timeStep [$timeSteps GetTuple1 $nfile]
       reader SetTimeStep $timeStep

       # write out the vtk file
       vtkfile SetFileName $vtkfilename
       vtkfile Write
       puts " Writing VTK file $vtkfilename for time step $timeStep"
}


reader  Delete
vtkfile Delete
wm withdraw .
exit

#--------------------------------------------------------------------------


_______________________________________________
This is the private VTK discussion list. 
Please keep messages on-topic. Check the FAQ at:
http://www.vtk.org/Wiki/VTK_FAQ Follow this link to subscribe/unsubscribe:
http://www.vtk.org/mailman/listinfo/vtkusers