Hi,
How do I use map or pmap in Julia to apply a function each row of a 2D
matrix and get back a 2D matrix with each row appropriately updated?
Currently, map returns an array of 1D arrays instead of a 2D array, e.g.:
*julia> **a=rand(5,3)*
*5x3 Array{Float64,2}:*
* 0.0970387 0.944568 0.589086 *
* 0.477571 0.916078 0.0674227*
* 0.424044 0.827748 0.49385 *
* 0.691055 0.0370019 0.845552 *
* 0.686033 0.812021 0.222669 *
*julia> **map(row->a[row,:]+1, 1:size(a)[1])*
*5-element Array{Array{Float64,2},1}:*
* 1x3 Array{Float64,2}:*
* 1.09704 1.94457 1.58909*
* 1x3 Array{Float64,2}:*
* 1.47757 1.91608 1.06742*
* 1x3 Array{Float64,2}:*
* 1.42404 1.82775 1.49385*
* 1x3 Array{Float64,2}:*
* 1.69106 1.037 1.84555 *
* 1x3 Array{Float64,2}:*
* 1.68603 1.81202 1.22267*
Although I could probably post-process the output of map back into a 2D
array, is there is a more elegant way of doing it?
Mike
