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I've never seen this operator yet.
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It means not equal to as you say. It doesn't have any other meaning in MATLAB. The ~ by itself has meaning. It can be used to not return certain outputs from a function.
== — True if the first input is equal to the second input. ~= — True if the first input is not equal to the second input. < — True if the first input is less than the second input. <= — True if the first input is less than or equal to the second input.
It consists of a single MATLAB expression and any number of input and output arguments. You can define an anonymous function right at the MATLAB command line or within a function or script. This way you can create simple functions without having to create a file for them.
If you define a bidimensional array y, and you want to access all its elements on the first column: y(:,1) will do it. If you want to access to all the elements of the fift row: y(5,:) is the syntax you have to use. The colon means: take all the elements along the specified dimension.
This is the not equal to operator.
In Java and C++ you may have seen it as !=
Hope that helps!
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