Selecting/Filtering elements by subcategory in project environment

Revit
1

Hello community,

We are trying to purge subcategories in our project file, starting with detail items, but in order to do so we need to know on what families these subcategories exist.

is this possible?

1 Like
2

I have found this app in the Kiwi Bonus Tool Package that does what I need.

Capture

it gives me a true/false if the subcategory exists.

How can we do this in dynamo???

3

I am digging a bit on what the app does and I think what it does is open every family, read and close.

This way can collect the data,I guess we can do the same here.

4

Hi,

You can retrieve the subcategories and their properties like this :

Get%20SubCategory
Get SubCategory.png1424×1118 73.4 KB

2 Likes
5

Amazing Alban!!!

You are Genious!!!

Thank you very much

6

Alban,

I have another question,

I would like to compare Project subcategories with family subcategories and delete from the project the one that should not exist.

I have created this graph but I dont know how to retrieve the id of the subcategories so I can delete them.

c1
c11079×355 63.5 KB

c2
c2626×634 69.6 KB

Any ideas?

I am using the python script from this post but I don’t think is correct.

Dyn attached.

Home.dyn (13.9 KB)

7

Hi Francisco,

Use the ꟿ Document.DeleteElements node to delete the subcategories.

Delete%20subcategories
Delete subcategories.png1976×576 59 KB

2 Likes
8

Great Alban!

Which package includes the last node,ꟿ Document.DeleteElements?

9

The Springs package

10

Great,I guess I don’t have the latest one

Many thanks

11

This works perfectly,

Thank you very much Alban!

c3
c3.JPG1193×379 59.5 KB

Here is the graph in case anyone fancy.

Purge category subcategories.dyn (15.4 KB)

1 Like
12

Dynamo 2.0.3.8811 couldn’t find Node ‘Family.ByCategory’

Is it from a package?

13

Family Get Subcategory from Genius loci doesn’t work either.

Family%20Get%20Subcategory%20NOT%20working
Family%20Get%20Subcategory%20NOT%20working543×663 57.6 KB

UPDATE: on testing Family Get Subcategory works for Detail Items, but no other categories.

14

Hi Antony,

With Dynamo 2.03, the Family Get SubCategory node works normally.

Subcategory
Subcategory1683×866 80 KB

15

I tested it in a smaller, simpler, artifically created project and it worked.

So it seems there is something it comes across in a more complex project (a.k.a. a real project) that causes the node to fail.

A clue could be it caused Revit to demand some entities be deleted within families when it ran. No doubt those familes were dodgy but why would that happen if all the node was doing is collecting subcategory names? The families don’t need to be changed in any way.

Ah, Dynamo and the Revit API, works one minute then doesn’t.

You would think AutoDesk with its billions of profit could put a bit more into providing a reliable coding platform. Oh how I miss the days of lisp.

regards,
Antony McPhee

16

Thanks for the explanation.
I sent you in a private message a modified version of the custom node that should work better and will update the package.