[Paraview] Using PythonProgrammableFilter as a reader

[Utkarsh Ayachit]

I am not sure I follow why SetParameter won't work in your case.
Something like following is what I often end up using for such cases.

   <StringVectorProperty
        name="FileName"
        label="FileName"
        initial_string="FileName"
        command="SetParameter"
        animateable="1"
        default_values=""
        number_of_elements="1">
        <Documentation></Documentation>
        <FileListDomain name="files"/>
     </StringVectorProperty>



On Sun, Oct 12, 2014 at 2:00 PM, Jan Brezina <jan.brezina at tul.cz> wrote:
> Hi,
>
> I'm trying to use vtkPythonProgrammableFilter to implement a reader in
> Python. The problem is in passing the filename (form the filebrowser
> dialog) to the python script (the RequestData script). I need a method
> in vtkPythonProgrammableFilter with one char * argument that can behave
> like SetFileName(char *) to set this method to command property in the
> XML file. Unfortunately, this scheme is not compatible with SetParameter
> methods of vtkPythonProgrammableFilter. Finally, I find a hack using the
> method SetProgressText (from vtkAlgorithm) instead of SetFileName. So my
> XML looks like:
>
> <ServerManagerConfiguration>
>   <ProxyGroup name="sources">
>     <SourceProxy name="EGrid Reader"
>                  class="vtkPythonProgrammableFilter"
>                  label="EGrid Reader">
>       <StringVectorProperty
>             name="FileName"
>             animateable="0"
>             command="SetProgressText"
>             number_of_elements="1"
>             panel_visibility="advanced">
>         <FileListDomain name="files"/>
>       </StringVectorProperty>
>       <IntVectorProperty command="SetOutputDataSetType"
>                          default_values="4"
>                          name="OutputDataSetType"
>                          number_of_elements="1"
>                          panel_visibility="never">
>       </IntVectorProperty>
>       <StringVectorProperty
>         name="Script"
>         command="SetScript"
>         number_of_elements="1"
>         default_values="print self.GetProgressText()"
>         panel_visibility="advanced">
>         <Hints>
>          <Widget type="multi_line"/>
>        </Hints>
>       </StringVectorProperty>
>       <Hints>
>         <ReaderFactory extensions="egrid"
>                        file_description="Eclipse mesh File Format" />
>      </Hints>
>     </SourceProxy>
>   </ProxyGroup>
> </ServerManagerConfiguration>
>
> Is there a beter way how to pass the filename to the script? If not,
> could a SetFileName method be implemented in vtkPythonProgrammableFilter
> that simply calls
>
> SetParameter("FileName", the_path)
>
> ?
>
> Thank you for a help,
> Jan
>
> --
> ------------------------
> Mgr. Jan Brezina, Ph. D.
> Technical University in Liberec, New technologies institute
> http://www.nti.tul.cz/cz/WikiUser:Jan.Brezina
>
> --
> ------------------------
> Mgr. Jan Brezina, Ph. D.
> Technical University in Liberec, New technologies institute
> http://www.nti.tul.cz/cz/WikiUser:Jan.Brezina
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