# Scatter map density

**URL:** <https://forums.chaos.com/t/scatter-map-density/114639>\
**Category:** General\
**Created:** [April 12, 2023, 3:52pm UTC](https://forums.chaos.com/t/scatter-map-density/114639 "2023-04-12T15:52:08Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Blizard](https://avatars.discourse-cdn.com/v4/letter/b/3be4f8/32.png) [@Blizard](https://forums.chaos.com/u/Blizard)\
**Post date:** [April 12, 2023, 3:52pm UTC](https://forums.chaos.com/t/scatter-map-density/114639/1 "2023-04-12T15:52:08Z")

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Hello,

I’ve got some diffilculties with the map density apply to scatter. How it is working ? and what are the parameter to use for the map ? please

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**Author:** ![tsvetomira.girginova](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/tsvetomira.girginova/32/271331_2.png) [@tsvetomira.girginova](https://forums.chaos.com/u/tsvetomira.girginova)\
**Post date:** [April 13, 2023, 2:56pm UTC](https://forums.chaos.com/t/scatter-map-density/114639/2 "2023-04-13T14:56:17Z")

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Dear @Blizard ​, hello.

I will share a little trick that could help you to understand how the Density map is applied to [Scatter](https://docs.chaos.com/display/VREVIT/Scatter).  
After choosing Scatter Guests and host please follow these steps:

1. Create a new Generic material (named here _Test\_Scatter_​) and apply the desired for Scatter density map into the Diffuse channel ( **Paste it as Instance** ), see [here](http://ftp.chaosgroup.com/support/screenshots/Revit_2023-04-13_17-33-26.gif). Used in the example is V-Ray Checker Texture.  
2. Apply _Test\_Scatter_ material to the host geometry (it will be temporary until you receive the visual understanding and the wanted effect) and perform a test render, see [here](http://ftp.chaosgroup.com/support/screenshots/Revit_2023-04-13_17-38-11.png).  
3. Go to Test\_Scatter \> _Diffuse slot (= Scatter density map) \> Texture Placement_ and change **Repeat U/V** values. Perform another render to see the result, see [here](http://ftp.chaosgroup.com/support/screenshots/Revit_2023-04-13_17-42-41.gif).  
4. If you need, tweak other Scatter parameters as well. For example [Seed](https://docs.chaos.com/display/VREVIT/Scatter#:~:text=seed%20%E2%80%93%20controls%20the%20random%20seed%20of%20the%20scatter.%20change%20the%20integer%20value%20and%20refresh%20to%20get%20a%20different%20random%20distribution.), see [here](http://ftp.chaosgroup.com/support/screenshots/Revit_2023-04-13_17-43-55.gif).  
5. Replace _Test\_Scatter_ material​ with another one more suitable for your final rendering, see [here](http://ftp.chaosgroup.com/support/screenshots/Revit_2023-04-13_17-49-15.gif).

Please perform the described above and contact us with feedback.  
Thanks in advance.

Best regards,  
TS

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<div class="post-metadata">

**Author:** ![Blizard](https://avatars.discourse-cdn.com/v4/letter/b/3be4f8/32.png) [@Blizard](https://forums.chaos.com/u/Blizard)\
**Post date:** [April 13, 2023, 3:10pm UTC](https://forums.chaos.com/t/scatter-map-density/114639/3 "2023-04-13T15:10:58Z")

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Hi,

Thank you, it 's working very well. My issue was with the UV map to 0.01 😉  
Thank you again

Best regards

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**Author:** ![tsvetomira.girginova](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/tsvetomira.girginova/32/271331_2.png) [@tsvetomira.girginova](https://forums.chaos.com/u/tsvetomira.girginova)\
**Post date:** [April 13, 2023, 3:13pm UTC](https://forums.chaos.com/t/scatter-map-density/114639/4 "2023-04-13T15:13:49Z")

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You are welcome!

Enjoy scattering.