how to Purge unused materials

[dhanait_ajay13]

How to Purge Unused Materials?

I use Performance Adviser for purging but performance adviser  doesn't get unused materials.

[naveen.kumar.t · Accepted solution]

Hi @dhanait_ajay13 ,

Could you please try using the steps mentioned in the below link?

https://boostyourbim.wordpress.com/2016/10/21/purge-unused-materials-for-another-rtceur-api-wish/ 

[dhanait_ajay13]

@naveen.kumar.t  Thank you

[dhanait_ajay13]

but unused imported categories still remain exist

[naveen.kumar.t]

Hi @dhanait_ajay13 ,

Could you please provide some more information?
Can you explain your issue using screenshots?

[dhanait_ajay13]

not able to detect this imported categories

[naveen.kumar.t]

Hi @dhanait_ajay13 ,

Thanks for the screenshots.
Are you able to remove these imported categories in the Revit UI (without using the API) without any problems?
What steps did you follow?
I am checking with the Revit Engineering team for you.

[dhanait_ajay13]

yes i am able to remove these imported categories in the Revit UI (without using the API) without any problems
Simply click on Purge menu button 2-3 times it remove all unuse items

but using API i am not able remove this

[naveen.kumar.t]

Hi @dhanait_ajay13 ,

I had a discussion with the Revit Engineering team.

iterate through all categories. skip the built-in ones. pick Top level category with non-negative id. those are the ones you want. call Delete on those. I am not sure, though.

Also, Please take a look at these below links

https://thebuildingcoder.typepad.com/blog/2022/02/purge-unused-and-etransmit-for-da4r.html 

https://thebuildingcoder.typepad.com/blog/2022/03/purge-unused-and-the-autodesk-camel.html 

[skandregula]

Hi Naveen,

thanks for sharing the link. I was able to use it successfully. However, I did see that it doesn't purge everything material related all at once. Is there a way we can modify that and ensure that it's done in one step?

[naveen.kumar.t]

Hi @skandregula ,

Sorry, I am not aware of any other ways to achieve this functionality.