# Concurrently Live animation in Paraview
**URL:** https://discourse.paraview.org/t/concurrently-live-animation-in-paraview/3919
**Category:** ParaView Support
**Tags:** python
**Created:** [March 30, 2020, 9:15pm UTC](https://discourse.paraview.org/t/concurrently-live-animation-in-paraview/3919 "2020-03-30T21:15:53Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@leoncwu](https://discourse.paraview.org/u/leoncwu)
#### Post date: [March 30, 2020, 9:15pm UTC](https://discourse.paraview.org/t/concurrently-live-animation-in-paraview/3919/1 "2020-03-30T21:15:53Z")
Hi,
I want to visualize the results (vtk format) produced by an on-going simulation using Paraview concurrently. Is there any way to do this using Paraview? Is it possible to set up a timer so that I could write a python script to monitor and scan the folder for new results?
Thanks.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [March 31, 2020, 1:32am UTC](https://discourse.paraview.org/t/concurrently-live-animation-in-paraview/3919/2 "2020-03-31T01:32:53Z")
This usecase , in-situ live visualization, is covered by our tool Catalyst.
[https://www.paraview.org/in-situ/](https://www.paraview.org/in-situ/)
Do not hesitate if you any follow-up question.
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### Author:  [@leoncwu](https://discourse.paraview.org/u/leoncwu)
#### Post date: [March 31, 2020, 1:50pm UTC](https://discourse.paraview.org/t/concurrently-live-animation-in-paraview/3919/3 "2020-03-31T13:50:27Z")
Hi Mathieu, it is a perfect starting point for me. I will try to dig into it, but I will probably come back with more questions. Thanks a lot.
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### Author:  [@leoncwu](https://discourse.paraview.org/u/leoncwu)
#### Post date: [April 6, 2020, 6:53pm UTC](https://discourse.paraview.org/t/concurrently-live-animation-in-paraview/3919/4 "2020-04-06T18:53:44Z")
Hi Mathiue, I have started to run sample case using Catalyst. I found some examples on the official website. However, I did not recover the expected reuslts. The “driver.py” and “coprocessing.py” can run successfully, but the Paraview visualization did not appear.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 8, 2020, 5:18am UTC](https://discourse.paraview.org/t/concurrently-live-animation-in-paraview/3919/5 "2020-04-08T05:18:02Z")
looks like you’ve opened another topic, let’s discuss there
> [@Paraview Catalyst: co-processing visualization window cannot be launched](https://discourse.paraview.org/t/paraview-catalyst-co-processing-visualization-window-cannot-be-launched/3989):
>
> Hi, I am trying to use Catalyst to visualize my on-going simulation concurrently. I am in the process of recovering a sample test found in the source code. I was able to launch the run successfully, but the Paraview visualization window did not show up as expected. I tested it on both Windows machine and mac system, but it all failed to provide the visualization. Attached are the driver and co-processing files: [CatalystWaveletCoprocessing.py](https://discourse.paraview.org/uploads/short-url/3wjupQ1mMOAVss9KJssSnFY37kt.py) (3.1 KB) [CatalystWaveletDriver.py](https://discourse.paraview.org/uploads/short-url/kBbho0XExWQv2XMmBH6PHowOtcH.py) (3.3 KB) I use t…