# Update Pipeline during Catalyst processing

**URL:** https://discourse.paraview.org/t/update-pipeline-during-catalyst-processing/5193
**Category:** In Situ Support
**Tags:** python, vtk
**Created:** [August 27, 2020, 2:12pm UTC](https://discourse.paraview.org/t/update-pipeline-during-catalyst-processing/5193 "2020-08-27T14:12:16Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![amemmolo](https://discourse.paraview.org/user_avatar/discourse.paraview.org/amemmolo/32/4742_2.png) [@amemmolo](https://discourse.paraview.org/u/amemmolo)
#### Post date: [August 27, 2020, 2:12pm UTC](https://discourse.paraview.org/t/update-pipeline-during-catalyst-processing/5193/1 "2020-08-27T14:12:16Z")

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Good morning,

We would need to run a Catalyst pipeline in which the view changes over time both as positioning of the camera (focal point, etc.) and as data types and / or filters used. From the examples we found, the layout is defined upstream in CreateCoProcessor and the update is only of the data in DoCoProcessing. Is it possible to update camera views and filters (e.g. in DoCoProcessing)? How?

Thank you  
Antonio

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### Author: ![utkarsh.ayachit](https://discourse.paraview.org/user_avatar/discourse.paraview.org/utkarsh.ayachit/32/39_2.png) [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)
#### Post date: [August 27, 2020, 2:24pm UTC](https://discourse.paraview.org/t/update-pipeline-during-catalyst-processing/5193/2 "2020-08-27T14:24:29Z")

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See [this](https://discourse.paraview.org/t/how-to-use-time-value-in-pipeline/5093). The `coprocessor.Pipeline` gives you access to all pipeline objects created in `CreateCoProcessor`.