[Paraview] Programmable Source

[Aurélien Marsan]

Hello David,

I am in the same situation.
Here is what I have done :

   1. Create the reader in python, that works with pvpython, and returns (in
   my case) a vtkMultiBlockDataSet
   2. Then create a "MyReader.xml" file.
   That calls a vtkPythonProgrammableFilter, in which I import my reader and
   execute it.

Here is the contents of this file

<ServerManagerConfiguration>
  <ProxyGroup name="sources">

  <!-- server manager xml for a python script that reads a file
       the auto generated panel for this exposes everything more than we
want so
       a custom panel would be good -->
    <SourceProxy name="ReaderV3D" class="vtkPythonProgrammableFilter"
                 label="ReaderV3D">
      <Documentation
         long_help=""
         short_help="">
      </Documentation>

      <!-- data set type -->
      <IntVectorProperty
        name="OutputDataSetType"
        command="SetOutputDataSetType"
        number_of_elements="1"
        default_values="13">
        <!-- value of 13 means MultiBlockDataSet -->
      </IntVectorProperty>

      <!-- the script -->
     <StringVectorProperty
        name="Script"
        command="SetScript"
        number_of_elements="1"
        default_values="import pyturbo; pdo = self.GetOutput();data =
pyturbo.read(file);pdo.DeepCopy(data);">
<!--
       <Hints>
         <Widget type="multi_line"/>
       </Hints>
-->
     </StringVectorProperty>

      <!-- python script references a variable "file"
          we expose this as a property allowing the user to set it -->
     <StringVectorProperty
       name="file"
       command="SetParameter"
       number_of_elements="2"
       default_values_delimiter=";"
       default_values="file;'give_the_path_of_the_file'">
     </StringVectorProperty>

    </SourceProxy>
  </ProxyGroup>
</ServerManagerConfiguration>

Note that if you want to give a string as argument, you have to use the
quotation marks.
At this point, you just have to import the .xml as a plugin in Paraview

That may correspond to what you want to do.

Regards,

A.Marsan
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