Hmm, thanks ... but too mysterious for me. What is 'dest' and 'i' (columns
I guess, but how to loop on it?)?
segunda-feira, 18 de Julho de 2016 às 01:34:11 UTC+1, Yichao Yu escreveu:
>
> On Sun, Jul 17, 2016 at 8:05 PM, J Luis <jmf...@gmail.com <javascript:>>
> wrote:
> > Ghrrr, this works
> >
> > julia> [pointer_to_array(C[1], DS.n_rows) pointer_to_array(C[2],
> DS.n_rows)]
> > 186x2 Array{Float64,2}:
> > 7.0 53.3242
> > 6.99583 53.325
> > 6.99249 53.3264
> > ...
>
> You'll be better off to just create the Matrix and copy over the data
> with `unsafe_copy!(pointer(dest, DS.n_rows * (i - 1) + 1),
> unsafe_load(DS.data, i), DS.n_rows)`
>
> >
> > but I need a generic solution for a variable number of columns.
> >
> >
> > segunda-feira, 18 de Julho de 2016 às 00:40:25 UTC+1, J Luis escreveu:
> >>
> >> Hi, need help reshaping an output from C that comes out in N (columns)
> >> vectors into a 2-D matrix
> >>
> >> julia> C = pointer_to_array(DS.data, 2)
> >> 2-element Array{Ptr{Float64},1}:
> >> Ptr{Float64} @0x000000001bf17360
> >> Ptr{Float64} @0x000000001bf17970
> >>
> >> and
> >>
> >> julia> pointer_to_array(C[1], DS.n_rows)
> >> 186-element Array{Float64,1}:
> >> 7.0
> >> 6.99583
> >> 6.99249
> >> ...
> >>
> >> and I need to reshape these 2 columns into a 186x2 matrix but that's
> where
> >> all my attempts fails. I tried for example
> >>
> >> julia> hcat([pointer_to_array(C[k], DS.n_rows) for k=1:2])
> >> 2x1 Array{Array{T,N},2}:
> >>
> >>
> [7.0,6.99583,6.99249,6.98917,6.98639,6.98306,6.98029,6.97694,6.97417,6.97111
>
> >> …
> >>
> 6.44916,6.44472,6.44056,6.43612,6.43139,6.42611,6.42167,6.41694,6.41306,6.4089]
>
>
> >>
> >>
> [53.3242,53.325,53.3264,53.3281,53.33,53.3314,53.3331,53.3344,53.3364,53.338
>
> >> …
> >>
> 53.6008,53.6017,53.6028,53.6033,53.6042,53.6047,53.6053,53.6061,53.6072,53.6075]
>
>
> >>
> >> or
> >>
> >> julia> cat(2,[pointer_to_array(C[k], DS.n_rows) for k=1:2])
> >> 2x1 Array{Array{T,N},2}:
> >>
> >>
> [7.0,6.99583,6.99249,6.98917,6.98639,6.98306,6.98029,6.97694,6.97417,6.97111
>
> >> …
> >>
> 6.44916,6.44472,6.44056,6.43612,6.43139,6.42611,6.42167,6.41694,6.41306,6.4089]
>
>
> >>
> >>
> [53.3242,53.325,53.3264,53.3281,53.33,53.3314,53.3331,53.3344,53.3364,53.338
>
> >> …
> >>
> 53.6008,53.6017,53.6028,53.6033,53.6042,53.6047,53.6053,53.6061,53.6072,53.6075]
>
>
> >>
> >> but that is not what I need, as mentioned I need a Mx2 matrix.
> >>
> >> Thanks
> >>
> >> Joaquim
>
