[years, ~, gg] = unique(dataset(:, 1))...what does this line mean?what is the use of unique function here?

i want to know what actually that line means?

[Adam]

doc unique

explains the unique function.

[dpb]

And to amplify in the current context, clearly dataset holds the year of the data so the user is getting ready to process by year.

Probably the next section of code can be done more succinctly now via some of the other features in ML than the code is going to use, but we can't see that for sure...