Boolean logic with filtering tags

Software darktable
1

Hi,

I’ve tried around a bit and couldn’t find a way to filter the images in my collection with multiple tags.

My use case is the following:

I’m taking a lot of macro- and nature photography, on one hand for documentation and also, because they’re beautiful (:
This is why I first tag them to ‘nature’ → ‘[sub-tag e.g. plants/insects]’ … and then I have a separate tag ‘develop’ for all the pictures I’d like to develop.
Recently I returned from a larger travel and I just finished my tagging. Problem now is, that I want to export all pictures, which show nature while I didn’t chose them for further development.
So all pictures with:

tag is nature
AND
tag is not develop

Is there a way to achieve this? Or can I change my way of tagging to get there?

Thanks in advance
Carroll

PS: If anything is unclear, please ask :slight_smile:

2

Rewriting the selection a bit to:

tag = nature 
EXCEPT
tag = develop

gives me what you want (I think). The “EXCEPT” option would be the boolean “AND NOT”

3

Maybe I am more lost, than I admitted to be. Where do I find this filter?

So right now I am filtering for tags in the collections module:
collections -> metadata -> tags

There I can only search for one tag.

In the collection filters module, I can’t find an option to filter for tags specifically (even though when trying right now, I figured out that with search I can actually get the result I wanted!).

But where would I apply your solution?

Thank you
Carroll

EDIT: I found it!
With the small triangle it is possible to narrow down the search within the collection module.
When clicking on the boolean symbol next to the collection, you can chose the operation for narrowing down the search.

Thanks for hinting me to it!