simple way to multiply varying parameter with matrice

Hello,

My goal is to to diag() my matrice and then plot the eigenvalues over the parameter. since both *, .* are not helpful in this situation is there any very simple way to archieve my goal without having to use any for loops or such?

[Ameer Hamza]

Can you give an example of what you are trying to do?

[steffen seligmann]

like, i have a parameter param = 0:0.1:2 and matrice A. Now i want to do sth like multiply each element of param with A and diag() the resulting matrice B to then plot(param,B) for each element of param.

[madhan ravi]

What ? size(A) ?

Answer 1

[Ameer Hamza]

Try this

A = rand(2,2);
param = 0:0.1:2;

M = arrayfun(@(x) {x*A}, param);
M = blkdiag(M{:});

It multiplies A with all values in param and places the output on diagonals of matrix M.