the meaning of "[~," in a matrix

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hamid
hamid el 25 de Mzo. de 2016
Comentada: Star Strider el 23 de Mzo. de 2023
Hi
my friend send to me a code that I don`t understand a line of it. The line is:
[~ , x_opt] = min(g); % g is the cost function vector
my question is that what is the meaning of "[~," in a matrix?
thanks

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Star Strider
Star Strider el 25 de Mzo. de 2016
The tilde ‘~’ in a function output tells MATLAB to not import that output in the calling function workspace. The min function can produce two outputs, the minimum (the first output) and the index of the first instance of the minimum value for the second. In the code you quoted, whoever wrote it was only interested in the index.
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Allan
Allan el 23 de Mzo. de 2023
Editada: Allan el 23 de Mzo. de 2023
Thank You Mr.Star Strider (you are a goat)
Star Strider
Star Strider el 23 de Mzo. de 2023
My pleasure!

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