How to rule out (filter for a continuous function) some output data?

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Peyman
Peyman 2012-8-9
Hello,
t1=[1:1:100]
p=xlsread('Jan2010.xls','B101:B200');
t2=[101:1:200]';
k(t2)=a1*sin(b1*t2+c1)+a2*sin(b2*t2+c2);
if k(t2) > max(p) || k(t2) < min(p);
k(t2)=k(t2-t1);
end
v=k(t2)';
error:
Operands to the || and && operators must be convertible to logical scalar values
when I change to |, it doesn't show any error, but it doesn't have any effect on the function too.
How can I get rid of this error?
Anyway, I used another code (below); I didn't receive any error, however I didn't see any change in the result either!
if k(t2)>max(p)
k(t2)=k(t2-t1);
elseif k(t2)<min(p)
k(t2)=k(t2-t1);
end
I need this to rule out(filter) input data that is not relevant (because they are more than or less than 'max' or 'min' of p). so that when I draw the function k(t2) the final values of k doesn't exceed max and min of p.
How can I get rid of some particular results that a functions shows(the function is a sinusoidal diagram in this case)?
  2 个评论
Eric
Eric 2012-8-9
Do you realize that you said you have two questions and yet didn't ask any questions?
Peyman
Peyman 2012-8-9
编辑：Peyman 2012-8-9
Corrected it. means we are going somewhere, though no result yet

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Image Analyst
Image Analyst 2012-8-9
Maybe try it like this:
if k(t2) > max(p) || k(t2) < min(p) % Semicolon not needed.
k(t2) = k(t2 - 1); % Set to previous element.
end
  12 个评论
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Peyman
Peyman 2012-8-9
Sorry about that and thank you so much.
What debugger do you suggest.
I didn't follow at the end, what did you leave to me?! You already did it!
Image Analyst
Image Analyst 2012-8-9
MATLAB has a built in debugger. See some of Doug Hull's video tutorials on the web site - he has a blog. I did not handle the case where k(1) is a bad value but you see how to do it from the inside of the for loop.

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