# Thermal comfort, PPD and PMV index in paraview
**URL:** https://discourse.paraview.org/t/thermal-comfort-ppd-and-pmv-index-in-paraview/7200
**Category:** ParaView Support
**Created:** [May 11, 2021, 7:12am UTC](https://discourse.paraview.org/t/thermal-comfort-ppd-and-pmv-index-in-paraview/7200 "2021-05-11T07:12:32Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Andrea](https://discourse.paraview.org/u/Andrea)
#### Post date: [May 11, 2021, 7:12am UTC](https://discourse.paraview.org/t/thermal-comfort-ppd-and-pmv-index-in-paraview/7200/1 "2021-05-11T07:12:33Z")
Hi,
If i have a temperature and a velocity field, it is possible to calculate the PPD and PMV index? I searched in filters but I did not find a dedicated filter to thermal comfort. Is there a plugin or extension that I can install?
The formula to calculate the indexes requires temperature, velocity, some input constant and 2 iterative processes.
Thanks for the attention
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 11, 2021, 7:18am UTC](https://discourse.paraview.org/t/thermal-comfort-ppd-and-pmv-index-in-paraview/7200/2 "2021-05-11T07:18:03Z")
Can this be computed node by node ?
Then use calculator or python calculator
If not, use ProgrammableFilter.
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### Author:  [@Andrea](https://discourse.paraview.org/u/Andrea)
#### Post date: [May 11, 2021, 7:42am UTC](https://discourse.paraview.org/t/thermal-comfort-ppd-and-pmv-index-in-paraview/7200/3 "2021-05-11T07:42:29Z")
thanks for the asnwer
yes it can be computed node by node.
In python calculator can I insert a code of 60 lines with for and if cycles and with input parameters?
if there is not a existing filter or extension, it is the only way
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 11, 2021, 7:43am UTC](https://discourse.paraview.org/t/thermal-comfort-ppd-and-pmv-index-in-paraview/7200/4 "2021-05-11T07:43:41Z")
You can but it is basically unreadable. I’d go the programmable filter way.
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### Author:  [@Andrea](https://discourse.paraview.org/u/Andrea)
#### Post date: [May 11, 2021, 7:46am UTC](https://discourse.paraview.org/t/thermal-comfort-ppd-and-pmv-index-in-paraview/7200/5 "2021-05-11T07:46:44Z")
ok, thanks. I try this way