Re: neuroimage software - scientific computing and visualiza

So are you saying that if you have an array like:
a = [‘d’, ‘b’, ‘a’, ‘c’, ‘e’]
You would like to get something like:
a.sort_index #=> [2, 1, 3, 0, 4]

If that’s the case, then I’m sure it’s doable. No built-in
method that I’m
aware of, but you could easily create one.

For example:

class Array
def sort_index
(0…size).sort_by {|i| self[i]}

%w{d b a c e}.sort_index
=> [2, 1, 3, 0, 4]

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