[Paraview] PythonProgrammableFilters Multiple Input Ports

[Bane Sullivan]

Hi Gaël,

Thank you for your help! I was aware of this way to add multiple inputs to
a programmable filter and FYI if you would like to have a dialog appear in
the PV GUI to select the inputs in a non-arbitrary order then try making
several InputProperty attributes in the XML rather than using the
multiple_input variable.

Unfortunately, this still does not address my original issue. I need the
inputs to each be on their own port rather than multiple connections on a
single port. This is because I will implement the ability to select input
arrays from each port via drop down menus.

Does anyone know how to give the vtkPythonProgrammableFilter multiple input
ports or a means to select input arrays to process when having multiple
connections on one port? I have a robust means of selecting input arrays
for just one input but I cannot get it to work for more than one input.

Thank you,

Bane

On June 1, 2018 at 1:33:02 AM, Gaël Grail (gael.grail at gmail.com) wrote:

Hi Bane,

I'm using the binary version of Paraview available in Kitware's website, so
I don't know much about what should be written in the C code.
But in the xml, I'm using this and it works perfectly:

<ServerManagerConfiguration>
  <ProxyGroup name="filters">
    <SourceProxy class="vtkPythonProgrammableFilter"
                 label="toto"
                 name="To To">
  <InputProperty clean_command="RemoveAllInputs"
                     command="AddInputConnection"
                     multiple_input="2"
                     name="Inputs">
<ProxyGroupDomain name="groups">
<Group name="sources" />
<Group name="filters" />
  </ProxyGroupDomain>
  </InputProperty>
...

Hope this helps,

Gaël

2018-06-01 2:40 GMT+02:00 Bane Sullivan <banesulli at gmail.com>:

> Hi there,
>
> I see an old thread here: https://paraview.markmail.org/thread/
> z7cy73444s7fjadk about setting multiple input ports for python
> programmable filters but I cannot get this to work.
>
> I want to declare multiple input ports in a ServerManagerConfiguration XML
> plugin but I have been unable to successfully add more than one input port
> to the vtkPythonProgrammableFilter.
>
> I see that in `paraview/ParaViewCore/ClientServerCore/Core/vtkPythonProgrammableFilter.h`
> the following is declared:
>
>   /**
>    * Set the number of input ports
>    * This function is explicitly exposed to enable a
> vtkClientServerInterpreter to call it
>    */
>   void SetNumberOfInputPorts(int numberOfInputPorts) VTK_OVERRIDE
>   {
>     this->Superclass::SetNumberOfInputPorts(numberOfInputPorts);
>   }
>
>
> This leads me to believe that the functionality is there, but how exactly
> would I set the number of input ports from an XML plugin for a Programmable
> Filter? I have tried the following with no luck:
>
> <ServerManagerConfiguration>
>  <ProxyGroup name="filters">
>    <SourceProxy
> name="TestMuliPort”
> class="vtkPythonProgrammableFilter”
> label=“TestMuliPort”
> post_creation=“SetNumberOfInputPorts"
> arguments="2”>
> ……..
>
>
> I get the following ERROR:
>
> ERROR: In /Users/kitware/dashboards/buildbot-slave/8275bd07/build/
> superbuild/paraview/src/ParaViewCore/ServerImplementation/Core/vtkPVSessionCore.cxx,
> line 371
> vtkPVSessionCore (0x60c0000d4510): Object type:
> vtkPythonProgrammableFilter, could not find requested method:
> "SetNumberOfInputPorts"
> or the method was called with incorrect arguments.
>
> while processing
> Message 0 = Invoke
>   Argument 0 = vtk_object_pointer {vtkPythonProgrammableFilter
> (0x60c0003abde0)}
>   Argument 1 = string_value {SetNumberOfInputPorts}
>
>
>
> Any help would be greatly appreciated,
>
> Bane
>
>
>
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