# help with for statement

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son 20 Aug 2014
답변: Ben11 20 Aug 2014
hi, this is my code. first u insert the value of channels. It will create a pattern S. then i want to determine equation: 'Pfwmchannel(k)=S(k).* L.*m'
i use for statement but this is the error 'In an assignment A(I) = B, the number of elements in B and I must be the same.'
dlg_title = 'Insert Factor Value';
x1 = inputdlg('Enter number of channels:',dlg_title, [1 50]);
n = str2num(x1{:});
j = 1:n;
S = zeros(1,length(j));
if mod(n,2)==1
for k = 1:length(j)
if mod(j(k),2) == 0
S(k) = (n^2-1)/4 + n*j(k)/2 - j(k)^2/2 - n + j(k)/2;
else
S(k) = (n^2+1)/4 + n*j(k)/2 - j(k)^2/2 - n + j(k)/2;
end
end
else
for k = 1:length(j)
S(k) = n^2/4 + n*j(k)/2 - j(k)^2/2 - n + j(k)/2;
end
end
L=1:1:100;
m=(1000./L)-1;
Pfwm= exp(-alpha.*L);
for k = 1:length(j)
Pfwmchannel(k)=S(k).* Pfwm.*m
end

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### 답변(1개)

Ben11 20 Aug 2014
Adding an index to Pfwm and m might do the trick; with an alpha of 0.5 (arbitrary value) it did not give an error when I tried it and it seems to make sense:
for k = 1:length(j)
Pfwmchannel(k)=S(k).* Pfwm(k).*m(k)
end

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