How to build matrix

2 views (last 30 days)
Yulia
Yulia on 17 Mar 2014
Commented: Yulia on 17 Mar 2014
Dear all! I have the following problem. I have 4 values A,B,C,D each value has the size [3 x 1000]. A need to built matrix [A B; C D], which M [A(m,n) B(m,n); C(m,n) d(m,n)]. How to do it? NOw I have only the last result the code I have now :
if true
freq_points= 1000;
n = 3;
A = zeros(n,freq_points);
B = zeros(n,freq_points);
C = zeros(n,freq_points);
D = zeros(n,freq_points);
B = ones (n, freq_points);
for r =1:3
for la = 1:1:freq_points;
A(r,:) = exp(gamma(r,:).*d(r));
B(r,:) = 1;
C(r,:) = exp((-gamma(r,:)).*d(r))*(1/Z(r));
D(r,:) = -1/Z(r);
M = [A(r,la) B(r,la); C(r,la) D(r,la) ]
end;
end
  2 Comments
dpb
dpb on 17 Mar 2014
First format your code so we can read it...keep at it until it looks right in the preview window.

Sign in to comment.

Answers (2)

Image Analyst
Image Analyst on 17 Mar 2014
Take M outside the loop and do
M = [A B; C D];
So M is only created after A, B, C, and D have finished being created.
  1 Comment
Yulia
Yulia on 17 Mar 2014
in this case I have the answer with dimension[6:2000]. And it looks like :[A(1) A(2) A(3) D(1)D(2)D(3) ]

Sign in to comment.


Yulia
Yulia on 17 Mar 2014
I decided to make like this:
if true
for r = 1:3
for la = 1:1:freq_points
A(r,:) = exp(gamma(r,:).*d(r));
B(r,:) = 1;
C(r,:) = exp((-gamma(r,:)).*d(r))*(1/Z(r));
D(r,:) = -1/Z(r);
%D(r) = [D(r)];
M = [A(r,la) B(r,la); C(r,la) D(r,la) ];
FG (:,:,la) = M;
end
But now I do not know how to save all this all the matrices for r=1, r=2, r=3. NOw i can have only r = 3

Categories

Find more on Creating and Concatenating Matrices 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!