for loop execution problem

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PK
PK 2012-11-3
for the code below pls ignore all except colonysize my problem is my colonysize is 6 but when i execute colonsize/2 i have to get 3 but for the sample of code below its getting as 1 when i write the code as
for i = 1:colonysize/2;
j = randperm(siz);
k = randperm(colonysize/2);
but for below case when j is initiaised first it works fine
for j = randperm(siz)
i = 1:colonysize/2;
k = randperm(colonysize/2);
pi = randi([-1 1])*rand;
emp_bee(i,j) = bee(i,j) + (pi * (bee(i,j)-bee(k,j)));
end
bee(i,j) is a 3x5 matrix

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回答（1 个）

Wayne King
Wayne King 2012-11-3
I do not have any difficulty with either of these for loops
colonysize = 6;
siz = 5;
bee = randn(3,5);
for i = 1:colonysize/2;
j = randperm(siz);
k = randperm(colonysize/2);
end
Or
for j = randperm(siz)
i = 1:colonysize/2;
k = randperm(colonysize/2);
pip = randi([-1 1])*rand;
emp_bee(i,j) = bee(i,j) + (pip * (bee(i,j)-bee(k,j)));
end
I changed pi to pip above. Are you sure you want to overwrite pi in MATLAB?

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