MATLAB Answers

Finding diag of two cells

3 views (last 30 days)
Bahareh on 25 Jul 2011
I have two cells(a and b) each with size 1x4 and each of them contains 2x1 matrix in each of its columns. I would like to find diag([a b]) to get a 2x2 matrix but it seems that diag() is not defined for cell. Can anybody tell me what I should do?
  1 Comment
Nathan Greco
Nathan Greco on 25 Jul 2011
What 2x2 matrix are you looking for? diag([a b]) would provide a 2x1 matrix. Are you looking for [diag(a) diag(b)]? When asking questions, please provide sample inputs with an example of the expected result.

Sign in to comment.

Accepted Answer

Paulo Silva
Paulo Silva on 25 Jul 2011
cellfun(@diag,[a b],'uni',0)
Bahareh on 25 Jul 2011
Fantastic!!! Thanks.

Sign in to comment.

More Answers (1)

Nathan Greco
Nathan Greco on 25 Jul 2011
Does this work for you?
diag(cell2mat([a b]))
Note that the solution is the same as:
diag([a{1} a{2}])
To get the diag of both a and b, do this:
[diag(cell2mat(a)) diag(cell2mat(b))]
Jan on 26 Jul 2011
@Nathan: But without doubt Bahareh is very polite and thanked your repeatedly. It was obviously not his intentention to waste your time.

Sign in to comment.

Community Treasure Hunt

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

Start Hunting!