For loop through a cell array

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Burak
Burak 2021-5-21
评论： Jan 2021-5-21
Hi, I need to calculate a for loop through a cell array. Each element has 5x5 matrixes. As seen in the code, I need to calculate a for loop in each element of D.
clc
clear all
N=5;
xn=linspace(2,4,N);
yn=xn;
for nx=1:N
for ny=1:N
E1(nx,ny)=xn(nx)*1i+(xn(nx)-yn(ny)^2);
E2(nx,ny)=(xn(nx)+yn(ny))*1i+xn(nx);
end
end
a11=E1.*conj(E1);
a12=E1.*conj(E2);
a21=E2.*conj(E1);
a22=E2.*conj(E2);
A=[a11 a12;a21 a22];
B={E1;E2};
C={conj(E1);conj(E2)};
D=cell(2,2);
for i=1:2
for j=1:2
D{i,j}=B{i}.*C{j};
end
end
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Burak
Burak 2021-5-21
Sir, as I mentioned at the top, I need to calculate a for loop for each element of D cell matrix. I don't know how to do it. This is an example code. There are E1,E2,...,E8. and each of them are 150x150 size. So my D cell matrix is 8x8 and each element is 150x150 matrix.
Jan
Jan 2021-5-21
Your code seems to be fine for this job. So which problem do you want to solve now? In the code you use a {2 x 2} cell. If your real data are {8 x 8} simply change the code to:
D = cell(28, 8);
for i = 1:8
for j = 1:8
D{i,j} = B{i} .* C{j};
end
end

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回答（1 个）

Jonas
Jonas 2021-5-21
if you want to do a specific operation on each cell, then have a look into the cellfun() function
  1 个评论
Jan
Jan 2021-5-21
cellfun is nice and compact, but harder to code, more difficult to debug and it has a larger run time.

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