This kind of works for your example.
julia> [Number[1:3] float([1:3])]
3x2 Array{Number,2}:
1 1.0
2 2.0
3 3.0
Ivar
kl. 10:39:15 UTC+2 tirsdag 1. april 2014 skrev harven følgende:
>
> When I build a matrix from columns using vcat, the type of the columns is
> sometimes modified, e.g.
>
> julia> [[1:3] float([1:3])]
> 3x2 Array{Float64,2}:
> 1.0 1.0
> 2.0 2.0
> 3.0 3.0
>
> Here the first column of integers has been converted to float. How can I
> prevent this conversion so as to obtain
> 3x2 Array{Any,2}: # or Array{Real,2} since Real is the join type here
> 1 1.0
> 2 2.0
> 3 3.0
>
> I don't care about the type of the resulting array. The point here is not
> losing the information concerning the types of the columns. Sincerely,
>
>
