And how to do it if the "J" is an array rather than a vector? So that
was also Jcodes array of the same size as J?
julia> J
1557211x2 Array{Int64,2}:
930070 930070
1475172 1475172
... .....
21474836496 21474836496
4296445417 4296445417
Paul
W dniu 2014-12-04 o 19:03, Steven G. Johnson pisze:
It sounds like you have an array J and you want to map each element of
J to a unique integer in 1:N for N as small as possible? This will do it:
d = (Int=>eltype(J))[j => i for (i,j) in enumerate(unique(J))]
Jcodes = [d[j] for j in J]
Here, d is a dictionary mapping integers in 1:N to the corresponding
values in J, and Jcodes is the "re-coded" array.
