MATLAB: What does the Tilde (~) mean here in this code

matlab syntax

I have read the doc's for using the tilde (~) key, however I do not understand what is going on properly. I have a vector A of dimensios: 1359 by 1 where the values range from 0 to a max of 42.7. However, when I type this line of code, i get an output of 5001 and I am unsure why after even looking at the help doc.
[~,G] = max(A,1));
I am confused here because the max value of A is 42.7 so I am not sure why it is outputting G as 5001?
I'm sure the explanantion is simple once I get my head round it! Any help is greatly appreciated, thank you.

Best Answer

[M,I] = max(___) has two outputs. The first is the maximum value of the input and the second is the index of the maximum value.
[~,I] = max(___)) : The tilde merely suppresses the first output. This is done when the first n-outputs are not needed rather than assigning superfluous variables to them that are never used in the code.
For more info:
https://www.mathworks.com/help/matlab/matlab_prog/ignore-function-outputs.html
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