create a matrix with ones and zeros
1 view (last 30 days)
Show older comments
Tony Montgomery
on 6 Sep 2014
Commented: Tony Montgomery
on 6 Sep 2014
in need to create an array of 20-by-20 the first row needs to be 19 ones and 1 zero the first column is all ones the last row is is all ones from the first row first column diagnally to the last row last column needs to be filled with ones, the rest are all zero.
now I can type this all out but there must be a better way
my question is how do i create this array?
0 Comments
Accepted Answer
Star Strider
on 6 Sep 2014
Edited: Star Strider
on 6 Sep 2014
This looks like what you want:
a = ones(1,20);
M = diag(a);
M(1,:) = [ones(1,19) 0];
M(:,1) = a';
M(20,:) = a;
3 Comments
Star Strider
on 6 Sep 2014
My pleasure!
I just realised that I could have used ‘a’ in M(1:) as well:
M(1,:) = [a(1:19) 0];
More Answers (0)
See Also
Categories
Find more on Logical in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!