help with for statement

3 views (last 30 days)
son on 20 Aug 2014
Commented: Image Analyst on 30 May 2021
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;
S(k) = (n^2+1)/4 + n*j(k)/2 - j(k)^2/2 - n + j(k)/2;
for k = 1:length(j)
S(k) = n^2/4 + n*j(k)/2 - j(k)^2/2 - n + j(k)/2;
Pfwm= exp(-alpha.*L);
for k = 1:length(j)
Pfwmchannel(k)=S(k).* Pfwm.*m

Answers (2)

Ben11 on 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)

Edmund Williams
Edmund Williams on 30 May 2021
Can someone please correct this codes for me
X=zeros(1,2,5) X(1)=1 For n= 2:25 P=cos(x(n-1)) end; p;
  1 Comment
Image Analyst
Image Analyst on 30 May 2021
Not sure what "correct" means to you but at least this runs without error.
X = zeros(1, 25)
P = zeros(1, length(X) - 1);
X(1) = 1;
for n = 2 : length(X)
P(n - 1) = cos(X(n - 1));
Since your "Answer" is not an answer to @son's 7 year old question, it you have further difficulties, you should start your own question so we don't but @son with emails about activity on his question.

Sign in to comment.


Find more on Install Products 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!