Matrix from triple loop
3 views (last 30 days)
Show older comments
I am trying to simplify the code from following loop:
for i = 1:10
for j = 11:20
RS_1(:,i) = signal(:,i) - signal(:,j);
end
for j = 21:30
RS_2(:,i) = signal(:,i) - signal(:,j);
end
for j = 31:40
RS_3(:,i) = signal(:,i) - signal(:,j);
end
for j = 41:50
RS_4(:,i) = signal(:,i) - signal(:,j);
end
RS = [RS_1 RS_2 RS_3 RS_4];
end
With this one:
for i = 1:10
for j = 11:50
for k = 1:40
RS(:,k) = signal(:,i) - signal(:,j);
end
end
end
I am wondering why do I get different matrix RS?
0 Comments
Accepted Answer
Massimo Zanetti
on 28 Sep 2016
It doesn't work because your are using the RS_n matrices in your second code. This is a simplification of the first code:
RS_1(:,1:10) = signal(:,1:10) - signal(:,11:20);
RS_2(:,1:10) = signal(:,1:10) - signal(:,21:30);
RS_3(:,1:10) = signal(:,1:10) - signal(:,31:40);
RS_4(:,1:10) = signal(:,1:10) - signal(:,41:50);
RS = [RS_1 RS_2 RS_3 RS_4];
3 Comments
Massimo Zanetti
on 28 Sep 2016
Ah ok! simple like this:
for i=[11,21,31,41]
RS(:,i-10:i-1) = signal(:,1:10)-signal(:,k:k+9);
end
That's it.
More Answers (0)
See Also
Categories
Find more on Matrix Indexing 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!