# Check if cell contains only certain combination of variables

1 view (last 30 days)
Metin Akyol on 31 Jan 2022
Edited: Turlough Hughes on 31 Jan 2022
I have a 4x1 cell filled with 4 possible string values: 'A', 'B', 'C', or 'D'
I would like to ensure that the values in there either:
any combination of: 'A' and/or 'B'
OR
any combination of 'C' and/or 'C'
But I want to raise an error if there is any mix between say A and C, or A and D, and so forth
Metin Akyol on 31 Jan 2022
So the above example, would thus be an invalid one based on my criterion, so this should raise a flag.

Turlough Hughes on 31 Jan 2022
Edited: Turlough Hughes on 31 Jan 2022
You can do this with an "exclusive or" (see xor) where you check that you have exlusively either 'A' or 'B' xor 'C' or 'D', but not a mix of A and C or A and D, etc. See the following:
x = {'A','B','C','D'}.';
% conditions
condA = any(matches(x,"A"|"B"));
condB = any(matches(x,"C"|"D"));
assert(xor(condA,condB),'Error: ...')
Metin Akyol on 31 Jan 2022
Fantastic, thank you so much. That's it.

Benjamin Thompson on 31 Jan 2022
So something like this? I am sure you can add more detail to deal with all possible cases.
myCellArray{1} = 'A';
myCellArray{2} = 'B';
myCellArray{3} = 'C';
myCellArray{4} = 'D';
if (myCellArray{1} == 'A')
for (i = 2:4)
if ((myCellArray{i} == 'C') || (myCellArray{i} == 'D'))
disp('Not Good')
end
end
end
Metin Akyol on 31 Jan 2022
Yep, that is kind of how I did it too. Thank you so much.

R2021a

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by