Purge/Delete unused elements

[shrawanram]

@Alban_de_Chasteigner
This is superb but how to make until it becomes 0 (Zero) purged items.

Thanks in advance.

[COY]

Hi @shrawanram and @Alban_de_Chasteigner ,
I am also having this doubt, have any of you been able to run the script until the purged items are 0?

Thanks,
Clara

[Alban_de_Chasteigner]

Hi Clara,

In Dynamo, you can reproduce the Revit function Purge unused.
But it will be exactly like in Revit, you have to repeat the command 3 times.

[Phillip_Sheridan]

Hi Alban, I used the python script and got that to execute the revit command “Purge Unused” , but it will only do it once no matter how many times it appears in the Dynamo graph. How can I get it to repeat the command 3 times ?

[Alban_de_Chasteigner]

Hi Philipp,

It’s not possible to repeat the postable command.

See also this post :

HELP! Activate multiple views on multiple sheets

Nope, postable commands cannot be run more than once as far as I’m aware, so looping will not work I’m afraid. In fact, I don’t even think you can daisy chain them in the Dynamo graph, although I haven’t tested thoroughly as I try to avoid Postable Commands if I can. Perhaps you could use the TransactionManager.Instance.ForceCloseTransaction() and put the transaction in your loop rather than outside but I think this will also fail.

[Petar_Penchev1]

Can you share with us the code behind the node Document.Purge? I am curious which method is used to achieve that.
Thank you!

[jacob.small]

He leveraged a portable command last I knew. Best to ask in the github for the orchid project as he isn’t active here anymore.

[Alban_de_Chasteigner]

@oliver.green translated this code snippet from VB to IronPython :

Purge Unused using Performance Adviser

The iron python script :

OliverEGreen/CodeSamples/blob/master/PurgeRevitViaAPI.py

[Petar_Penchev1]

@Alban_de_Chasteigner

clr.AddReference(“RevitNodes”) import Revit clr.AddReference(“RevitServices”) import RevitServices

Thank you very much!
Cheers!

[Hangman]

Ummm … guys … I can’t find anyone who’s posted this here yet but:
Model Cleanup - Deleting Views
About Aug 2017, @Andy_Grout posted regarding a model cleanup complete with choices running in the Dynamo Player.
I’ve also created & use this Purge All graph:
This graph uses the Orchid package 202.4.2 or newer. Developed in Dynamo 2.0.

[edit] Missed listing @erfajo 's post, it is another example of purging. His post is for purging excess files from a directory though (ie: RevitFile.0001.rfa). I’m still learning.

Hope this helps.

[JHLEE]

There is a Youtube Video to purge unused

Dynamo - Purge Unused

[ericASCWL]

Hey guys I found this on twitter by someone named Bird Tools. I don’t know much about this command, but I tried it in Dynamo and it works but it takes a while to process.

[solamour]

You can also use Document.PurgeUnused in nodal form which is in Revit 2021 and upwards The DesignScript call you reference is calling the same node!