in algorithm a~b , in MATLAB...??????
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Hi everybody, In an algorithm I am working on, I came to a check box with content:
a~b
where the '~' would be read as "a approximates b" which can be defined probably by absolute numerical difference. so if a~b=TRUE (i.e the difference b/n a and b is very small)further computations are done if not( i.e. a~b=FALSE) then termination! , if 'YES' it continues with other computations, and if 'NO' it terminates. How can I write this in MATLAB?
1 Commento
Walter Roberson
il 19 Ott 2011
In that context, it would be read as "a approximates b". But like the others say below, you need to define what approximation means in the context.
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Daniel Shub
il 19 Ott 2011
Assuming ~ mean not (or not equal) in your algorithm you could use ~= or ~isequal(). I prefer the isequal approach since it handles arrays and mismatched sizes ...
if isequal(a, b)
disp('NO')
else
disp('YES')
end
Although it seems a little backwards to me that a~b leads to YES.
5 Commenti
Jan
il 28 Ott 2011
@Meh: After you have clarified that "~" should mean "approximation", it got clear, that this amswer does not concern the question. Why do you accept it then as a solution?
It would be helpful for the forum, if you explain what "approximation" means qualitatively for your case. Then an answer would be very easy.
Daniel Shub
il 28 Ott 2011
It might also be helpful if I edited my answer to reflect the comment I made about comparing the difference to a tolerance. I am hesitant to do that since the answer has already been accepted.
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