Vector{T} is just a typealias for Array{T, 1} so it's still an array but
limited to one dimension. Your problem can be solved with
convert(Array{Int, 2}, Jcodes)
or equivalently
convert(Matrix{Int}, Jcodes)
On Wednesday, 10 December 2014 11:09:55 UTC, paul analyst wrote:
>
> 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.
>
>
>
