[Paraview] Time-Varying Input Sources

[Michael Jackson]

Having gone through this a few times myself, is there a way in the  
RequestInformation to get the Time information from the file? On some  
of my custom files that involved opening the file to do a partial read  
just to get the time information (and a few other pieces of  
information) for the pipeline.

I have some source code that you can look at if you need it.

Mike Jackson


On Sep 29, 2008, at 12:42 PM, Randall Hand wrote:

> Seems that was the final issue.  I was initializing those variables  
> in RequestData, but RequestInformation is called before then.  I  
> wound up simply making RequestInformation call RequestData, and now  
> it works! :)
> ----------------------------------------
> Randall Hand
> Visualization Scientist
> ERDC MSRC-ITL
>
>
> On Mon, Sep 29, 2008 at 11:20 AM, Moreland, Kenneth  
> <kmorel at sandia.gov> wrote:
> Uhhhh... I dunno.  It should report all of the time steps.  Are you  
> sure
> your RequestInformation method is reporting all of the time steps,  
> and not
> just 2?
>
> -Ken
>
>
> On 9/29/08 10:13 AM, "Randall Hand" <randall.hand at gmail.com> wrote:
>
> > Ok, that gets it to display 2 timesteps (0 and 1).  How do I get  
> it to display
> > all 48 so that the user can flip between them with the spinner up  
> top?
> >
> > It still works with the Animation view if I manually configure it  
> to show 48
> > frames between 0 and 47.
> > ----------------------------------------
> > Randall Hand
> > Visualization Scientist
> > ERDC MSRC-ITL
> >
> >
> > On Mon, Sep 29, 2008 at 10:42 AM, Moreland, Kenneth <kmorel at sandia.gov 
> > wrote:
> >> Did you add the special TimestepValues property to the reader's  
> server
> >> manager XML definition?
> >>
> >>      <DoubleVectorProperty name="TimestepValues"
> >>                            repeatable="1"
> >>                            information_only="1">
> >>        <TimeStepsInformationHelper/>
> >>        <Documentation>
> >>          Available timestep values.
> >>        </Documentation>
> >>      </DoubleVectorProperty>
> >>
> >> -Ken
> >>
> >>
> >> On 9/29/08 9:38 AM, "Randall Hand" <randall.hand at gmail.com> wrote:
> >>
> >>>> I've written a VTK File Reader that supports multiple timesteps  
> (48 in my
> >>>> tests).  But when I load the data, it shows me no timestep data  
> in the
> >>>> properties panel, and the time increment thing at the top  
> toolbar is greyed
> >>>> out.  However, if I use the Animation tools to animate from  
> timestep0 to 47
> >>>> >> in
> >>>> 48 steps, it properly animates through time.
> >>>>
> >>>> What am I doing wrong?  My RequestInformation (where I think this
> >>> information
> >>>> comes from) is shown below:
> >>>>
> >>>>
> > 
> > 
> > 
>  //--------------------------------------------------------------------------
> >>> --
> >>>> int vtkAdhfaNetwork::RequestInformation(
> >>>>   vtkInformation* reqInfo,
> >>>>   vtkInformationVector** inVector,
> >>>>   vtkInformationVector* outVector
> >>>>   )
> >>>> {
> >>>>   if(!this- 
> >Superclass::RequestInformation(reqInfo,inVector,outVector))
> >>>>     {
> >>>>     return 0;
> >>>>     }
> >>>>
> >>>>   vtkInformation *info=outVector->GetInformationObject(0);
> >>>>   double tRange[2];
> >>>>   tRange[0] = this->Steps[0];
> >>>>   tRange[1] = this->Steps[this->NumSteps-1];
> >>>>   info->Set(
> >>>>     vtkStreamingDemandDrivenPipeline::TIME_RANGE(),
> >>>>     tRange,
> >>>>     2);
> >>>>   info->Set(
> >>>>     vtkStreamingDemandDrivenPipeline::TIME_STEPS(),
> >>>>     this->Steps,
> >>>>     this->NumSteps);
> >>>>   return 1;
> >>>> }
> >>>>
> >>>> ----------------------------------------
> >>>> Randall Hand
> >>>> Visualization Scientist
> >>>> ERDC MSRC-ITL
> >>
> >>
> >>    ****      Kenneth Moreland
> >>     ***      Sandia National Laboratories
> >> ***********
> >> *** *** ***  email: kmorel at sandia.gov
> >> **  ***  **  phone: (505) 844-8919
> >>     ***      fax:   (505) 845-0833
> >>
> >>
> >>
> >
>
>
>   ****      Kenneth Moreland
>    ***      Sandia National Laboratories
> ***********
> *** *** ***  email: kmorel at sandia.gov
> **  ***  **  phone: (505) 844-8919
>    ***      fax:   (505) 845-0833
>
>
>
>
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