Hi Pontus, Thank you for this very clear (!) example. I have worked hours on implementing my composite type, but the Julia documentation is not particularly informative on more difficult composite types (like mine). Could you/or anyone else please explain how to initialize a composite type that contains a matrix of another composite type? See below. Any help is enormously appreciated.
Cheers, Marcel type Draw efficiency :: Float64 V :: Vector{Float64} expV :: Vector{Float64} sumExpV :: Vector{Float64} P :: Vector{Float64} PdX :: Matrix{Float64} SumPdX :: Matrix{Float64} ZZ :: Matrix{Float64} Draw(nrTasks,nrParameters)=new( 99, zeros(14*nrTasks), zeros(14*nrTasks), zeros(14*nrTasks), zeros(14*nrTasks), zeros(14*nrTasks, nrParameters), zeros(14*nrTasks, nrParameters), zeros(nrParameters, nrParameters)) end type Design efficiency :: float64 design :: Array{Float64} X :: Array{Float64} dX :: Array{Float64} draws :: Matrix{Draw} Design(nrDraws, nrSubdesigns, nrTasks, nrParameters)=new( 99, zeros(nrTasks,12,nrSubdesigns), zeros(14*nrTasks,nrParameters,nrSubdesigns), zeros(14*nrTasks,nrParameters,nrSubdesigns), [Draw(nrTasks,nrParameters) for ... ] ) * # Create a Matrix of type "Draw" with dimensions [nrSubdesigns, nrDraws]* *??* end design = [Design(nrDraws, nrSubdesigns, nrTasks, nrParameters) for i in 1:33]