What does the character ~ mean in these code?
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Hi all, I'm confused by the sentence as following:
[~,ind] = min(dist(:));
Could you tell me what does the character "~" mean in this code?
I appreciate your answer.
1 Comment
Daniel Shub
on 23 May 2012
Related question: http://www.mathworks.co.uk/matlabcentral/answers/37858-the-sign-is-not-backwards-compatible
Accepted Answer
the cyclist
on 23 May 2012
It is a "dummy" output, meaning that even though MATLAB normally generates that output, you know that you do not need it later in your code. In your particular case, you need the second output (the index), but you don't need the first output (the value of the minimum).
3 Comments
Walter Roberson
on 23 May 2012
Note: older versions of MATLAB do not support this syntax. If your version of MATLAB reports an invalid operation at that point, then substitute any convenient temporary variable name for the ~ . For example,
[junk, ind] = min(dist(:));
clear junk
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