[Paraview] Optional input ports

[Cornelis Bockemühl]

Looks like I may have to provide an example that everybody can follow!?

The "Multicorrelative Statistics" filter is already such an example!

Reading the docs and looking into the server XML it is obvious that you can
optionally provide a model as a second input port. However, I cannot find
any way how to specify this second input:

- Directly selecting it (next to the primary input) has the effect that the
filter is greyed out in Paraview - no chance!

- Selecting only the primary data input allows to choose the
"Multicorrelative Statistics" filter just fine. I would expect that before
pressing "Apply" I should still specify the second input (the model thus),
but no chance: In the context menu, the "Change Input" option is greyed out
- and I cannot find any other way to enter any second input data.

- Pressing "Apply" does apply the filter, but without the optional model
data. Now the "Change Input" would be avaliable in the context menu, but
specifying any additional input NOW has no effect: the calculation is not
redone any more...

Bottom line: My first example was from a self-written filter, so there is
still the possibility that I have done something wrong. But with the
standard filter that comes with every Paraview installation I would expect
that there MUST be some way to provide that second input data item!?

I am simply lost here!

Regards,
Cornelis

>Dear Parview users,
>
>This question seems trivial - but I do not find any solution on my own!
>
>I have a filter with one mandatory and two optional input ports, and this
>is how I proceed with it:
>
>- Select some data object, then call that filter. It does not open the
>input port item selection dialog because the one mandatory input is already
>satisfied.
>
>- I want to add one of the optional inputs (or both) - but the "change
>input" option is greyed! Strange - because for me this would be the logical
>moment to specify additional input, i.e.: BEFORE pressing the Apply
>button...
>
>- Ok, I press the Apply button thus. Of course the output is not what I
>want because the optional inputs were missing...
>
>- However, now I can choose also the "change input" option - and I do so. I
>select the two optional inputs. But now nothing happens any more - and now
>the Apply button is grey, so no way to trigger an update of the output!
>
>To me this does not look very logical, so I assume that I am missing some
>point...
>
>The other "intuitive option" would be to select all the desired input
>items, and only then open the filter. However this is impossible from the
>beginning because now the filter is already greyed in the menu as being
>"not applicable"!
>
>Thanks for any helpful hints!
>
>Regards,
>Cornelis Bockemühl


-- 
Cornelis Bockemühl
Basel, Schweiz
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/paraview/attachments/20161115/442322cd/attachment.html>