[Paraview] Time-Varying Input Sources

[Randall Hand]

Not really, no.  This reader is a bit unusual because it's not really a
reader.  It reads a simple 2D Geometry from disk, and then uses 2 other
files to run a Neural Network simulation on that grid.  The number of
timesteps isn't known until after the network is run, which requires all
files to be loaded from disk.

----------------------------------------
Randall Hand
Visualization Scientist
ERDC MSRC-ITL


On Mon, Sep 29, 2008 at 12:01 PM, Michael Jackson <
mike.jackson at bluequartz.net> wrote:

> 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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>>
>
>
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