matrices, collect, rows, columns

hi every one

I need help with a program to calculate the sum of matrices

If I have a main matrix A and another matrix B and I need to add A+ B = C, then if all of the elements of C are positive, re-combine C+ B and so on, stop when we get a result that is a matrix containing negative elements. finally, we collect all matrices with positive elements.

Regards

[James Tursa]

What have you done so far? What specific problems are you having with your code?

How do you want to handle potential infinite looping? How do you want your matrices "collected" at the end of the process? Can you provide a small example?

[ali talib]

A=[6 5 16; 7 2 5]

B=[1 -1 0;-1 1 0]

A+B=C

if all elements of C are positive, then B+C=D and so on

if one element of C is negative, stop

collect all positive matrices

Answer 1

[David Hill]

C(:,:,1)=A+B;
c=2;
while nnz(C(:,:,end)>0)==numel(C(:,:,end))
    C(:,:,c)=C(:,:,c-1)+B;
    c=c+1;
end
C=C(:,:,1:end-1);

[ali talib]

thanx a lot David