Dear experts
I'm creating a (murine) brain labelmap. I've saved 27 ROIs + background in an uint8 nifti (not .gz) format. I'd like to make this work like the ALL, where if you click on a pixel it says in which region you are, according the labels written in a .txt file in the same folder.
I've edited the header to have regular=98 and the statistics type as "labels". I've made the text files as I've seen the ALL one:
1 First Region
2 Second region

Every unique value that's found in the image has a code (except 0, which is the background)
Yet MRIcroGL doesn't see the labels. Actually not even mricron
How can I fix this?

Best regards!
Luca

I can not replicate your issue. What version of MRIcroGL are you using? I would make sure it is the latest (1.2.20201102). What operating system are you using (Linux is case sensitive)? Does the attached example work?

Your file works. Indeed my doubt was related to how I prepare my file and not about MRIcroGL.

Do you have any suggestions about what I should check? In case you've got time I've attached the file that's giving me troubles.

Your file works fine, you just have to rename allROIs.nii.txt to allROIs.txt

Thank you very much!
I knew I must be messing up something trivial!