[Paraview-developers] Animation: spreadsheet view not synchronized with table

[Cornelis Bockemühl]

...and this was it indeed: changing the RequestInformation function in
my strip-down example to the following solves the problem:


int vtkTestTTSource::RequestInformation(vtkInformation* request,

                                        vtkInformationVector** inputVec
tor,

                                        vtkInformationVector* outputVec
tor)

{

    if(!Superclass::RequestInformation(request, inputVector, outputVect
or))

        return 0;



    // tell the caller that we can provide time varying data and specify the range

    double tRange[] = {0., 1.};



    // generate a vector with the steps - from 0 to numSteps

    Steps.resize(NumSteps + 1);

    for(int s = 0; s <= NumSteps; ++s)

        Steps[s] = (double)s / (double)NumSteps;



    // tell it to the information objects...

    for(int n = 0; n < 2; ++n)

    {

        vtkInformation* info = outputVector->GetInformationObject(n);

        info->Set(vtkStreamingDemandDrivenPipeline::TIME_RANGE(), tRange, 2);

        info->Set(vtkStreamingDemandDrivenPipeline::TIME_STEPS(), Steps.data(), Steps.size());

        info->Set(CAN_HANDLE_PIECE_REQUEST(), 1);

    }



    return 1;

}


Sorry for all who wasted time for a problem that I have finally solved
by my own!

But still thanks for serving me as a "mirror" for the problem...

With kind regards,
Cornelis

Am Montag, den 22.01.2018, 16:19 +0100 schrieb Mathieu Westphal:
> Hello Cornelis
> 
> > I've tested quickly the supports of table and time steps and it seems
to works great.
> Here is how i tested it :
> 
> - Download attached .csv files
> > - open table..csv (colapsed time series of files), show in a
spreasheet view
> - click play
> 
> Let me know if this works on your end.
> 
> Best,
> 
> Mathieu Westphal
> 
> 
> 
> 
> > On Mon, Jan 22, 2018 at 4:08 PM, Cornelis Bockemühl <cornelis.bockemu
ehl at gmail.com> wrote:
> > Hello,
> > > > > > To me it looks like this could be either some omission from my side
or a bug in ParaView, but in any case I would be interested in a
solution first of all!
> > 
> > > > > > > > > > I have written a filter that takes some input ports and produces 5
output ports - the first being an "unstructured grid" and the
others are tables. In the server manager XML I used hints to make
sure that the tables are not automatically opened at once (<View
type="None" port="..." />). This works nicely so far.
> > 
> > > > > > Now the filter is producing a time series, step by step modifying
the "unstructured grid", and some data written to the tables per
period.
> > 
> > > > > > > > What I see now is that the "unstructured grid" is doing what I
expect: I can go up and down along the time axis and it always
shows the proper graphical output. I can also capture the data in a
spreadsheet, and this is also properly updated.
> > 
> > > > Not so the additional tables! In this case they are updated ONCE
and never again, so I can have different scenarios:
> > 
> > > > > > > > > > - I add the filter and press apply. This would bring me to step 0 -
with empty tables. If I open now a spreadsheet view and look at any
of them this correct. But if I now press "play" and go from step to
step, only the "unstructured grid" gets updated, not the
spreadsheet view.
> > 
> > > > > > > > > > - I can also add the filter, press apply and immediately also
"play". With that I am at the last step, and opening a spreadsheet
view for the tables gives me the full tables - again correct. But
again: if I go back in time, the tables stay as they were initially
(i.e. full).
> > 
> > > > > > > > > > > > Now I prepared a demo case for this. It has just two tables, one
being shown immediately and the second only "on demand". Indeed I
could almost reproduce the behaviour: the first table does what is
expected, but the second not. Only difference with my full case:
the second table NEVER shows anything, no matter if I press the
"play" button earlier or later!
> > 
> > > > > > It is interesting to note that the "Information" panel shows the
tables correctly, like: X rows, Y columns - even if the spreadsheet
view is completely empty. Or showing much more!
> > 
> > > > > > > > > > My question from the beginning is now: Is there something that I
would have to do to trigger a spreadsheet view update or is this a
bug that needs to be fixed? (Actually I hope for the first because
then I can quickly apply the fix in my own software and I am
fine!...)
> > 
> > > > > > > > I am attaching a package with source code (h, cxx and xml files)
plus a screenshot that illustrates the case where the second table
shows some content only in the properties panel (left), but not in
the spreadsheet view (right).
> > 
> > With many thanks for any helpful hints - and kind regards,
> > Cornelis
> > 
> > 
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