Hi all, I´m new in the forum so I’ll quickly introduce myself: my name is Francisco, I’m a spanish architect living in UK, currently working with Revit 2014 in a very big project with lots of tedious tasks, that’s why I’m interested in Dynamo and Python (I’m slowly learning, but the lack of time do…

@franciscusm Have a look below and see if it helps. [image]

Compare the 2 lists (list contains), and use filterbyboolmask (it will give the filters that don’t match you excel list.). Maybe post what you have so far.

Thanks for the answers. John, I’ve replicated your idea but does nothing. I’ve tried inside the Code Block “11408”; 11408; 11408…all the combinations, but didn’t delete the filter. That’s a great idea salvatore, although I still have to reach that point. This is what I have now, just export to…

@franciscusm I don’t think you need to export the element IDs, just the names would be enough. Use your script to updated your list of filters. Create another script and try follow my previous suggestions 1- Compare the names (strings) 2- Fitlerbyboolmask 3-delete

Then what I would need is delete the elements from a list of names (or IDs would work for me also). I managed to delete the elements from an IDs list. What I need now is to find out how to import from file a custom list (text to list or something like that). There are like 500 filters but I only …

Hi again, I managed to import the modified list from excel and to delete a list of elements by an IDs list. But the list I managed to import seems not to be in the right format. Deleting the ‘green’ list works while the ‘red’ one doesn’t delete anything. I think what I marked up in both lists is …

@salvatoredragotta I’ve tried what you said, and while it’s a good tip to compare lists, it didn´t delete anything, at least in this case. In the other hand, with FLATTEN, I could make the ‘Red’ list like the ‘Green’ one, but still doesn’t delete the elements, while the ‘Green’ one does…maybe the …

See if some of these nodes helps: [image]

@salvatoredragotta Thanks very much, finally worked with your method! :slight_smile: The problem was that the imported Excel list wasn’t considered as IDs by the node Element.ByID while the list generated by the node Element.ID was. Thanks everybody for the help!

[image] I want to share my first workflow it with you in case anybody finds it useful. Thanks for the help (specially to @salvatoredragotta ! It allows to export the whole list of filters to excel, then you save another excel file with the filters you want to keep (or delete) and import the file…

Delete elements from a list of IDs

Revit

john_pierson July 29, 2016, 9:03pm 2

There are also a lot of posts on here regarding grabbing data from excel.

How to delete elements in revit?

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Delete elements from a list of IDs

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