summation operation for a matrix?
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Hello everyone,
I have a matrix with dimensions 36x36. what i want to is this;
x(1,1)+x(1,2)+...+x(1,36) +x(2,1)+x(3,1)+x(4,1)+...+x(36,1) <= (somevalue)
I am using genetic algorithm solver. For another constraint i have, i did this;
con.sumrows=(sum(x,1)<=1);
Is there any simple solution for i want like above line? suggestions are welcomed.
Thank you in advance.
采纳的回答
x = (1:36)+(1:36).' % some 36-by-36 matrix
% add first row and first column (exlcuding first element)
sum(x(1,:))+sum(x(2:end,1))
% or add first row and first column then subtract first element because it
% was included twice
sum(x(1,:))+sum(x(:,1))-x(1,1)
3 个评论
Azime Beyza Ari
2022-4-4
I have a matrix with dimensions 36x36. what i want to is this;
x(1,1)+x(1,2)+...+x(1,36) +x(2,1)+x(3,1)+x(4,1)+...+x(36,1) <= (somevalue)
You don't have this matrix.
You must construct the matrix which implements this constraint.
In the matrix I set up for the other constraint, just set the ones at the correct positions, and you'll get the above constraint implemented:
https://de.mathworks.com/matlabcentral/answers/1687409-dependent-variable-operations?s_tid=srchtitle
There is no simpler way to do so.
You can have a look here for a simple example:
Azime Beyza Ari
2022-4-4
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