matrix operation

I have lower triangular matrix. How can I change it into upper triangular matrix. Is there any single step function ?

Answer 1

[Thomas]

q = [
          0.87             0             0
          0.58          0.85             0
          0.55          0.62          0.40]

>> q'   % this transposes..
ans =
          0.87          0.58          0.55
             0          0.85          0.62
             0             0          0.40

If you want to find the lower and upper triangular matrices of any matrix use

doc tril
doc triu

Eg.

c=rand(3,3)
tril(c)
triu(c)