# transparency on legend thresholds

**URL:** https://discourse.paraview.org/t/transparency-on-legend-thresholds/7343
**Category:** ParaView Support
**Created:** [June 2, 2021, 10:32am UTC](https://discourse.paraview.org/t/transparency-on-legend-thresholds/7343 "2021-06-02T10:32:02Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![frank\_forster](https://discourse.paraview.org/user_avatar/discourse.paraview.org/frank_forster/32/6643_2.png) [@frank\_forster](https://discourse.paraview.org/u/frank_forster)
#### Post date: [June 2, 2021, 10:32am UTC](https://discourse.paraview.org/t/transparency-on-legend-thresholds/7343/1 "2021-06-02T10:32:02Z")

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Hi,  
Is there a way to make one threshold of my dataset fully transparent. (\> -2)  
In addition, the holes you can see in the model are NoData with the same color as background.  
Because I’d like to add some basemap below, is there a way to make it transparent too ?

If there’s no way to add transparency, is there a way to only extract one threshold and then export it in a new dataset ?

 ![image](https://discourse.paraview.org/uploads/default/original/2X/3/3db79a8fbfa233027c2b4d2e9941932abb133663.png)

Thanks, Frank

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### Author: ![frank\_forster](https://discourse.paraview.org/user_avatar/discourse.paraview.org/frank_forster/32/6643_2.png) [@frank\_forster](https://discourse.paraview.org/u/frank_forster)
#### Post date: [June 2, 2021, 11:07am UTC](https://discourse.paraview.org/t/transparency-on-legend-thresholds/7343/2 "2021-06-02T11:07:25Z")

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Answering my own question,

I managed to exclude both Nodata and \< -2 Data using Threshold :

 ![image](https://discourse.paraview.org/uploads/default/original/2X/6/659487d5e5a59efe8f36a9daa73ad21131c23972.png)

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### Author: ![bastian](https://discourse.paraview.org/user_avatar/discourse.paraview.org/bastian/32/7513_2.png) [@bastian](https://discourse.paraview.org/u/bastian)
#### Post date: [June 3, 2021, 5:25pm UTC](https://discourse.paraview.org/t/transparency-on-legend-thresholds/7343/3 "2021-06-03T17:25:57Z")

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You can also use opacity mapping. There’s a checkbox “Enable opacity mapping …” in the color map editor for that purpose.

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### Author: ![frank\_forster](https://discourse.paraview.org/user_avatar/discourse.paraview.org/frank_forster/32/6643_2.png) [@frank\_forster](https://discourse.paraview.org/u/frank_forster)
#### Post date: [June 3, 2021, 7:07pm UTC](https://discourse.paraview.org/t/transparency-on-legend-thresholds/7343/4 "2021-06-03T19:07:01Z")

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Thanks for the complement @bastian