How to extract the results of the nufft operator with a multichannel rawdata

[aTrotier]

Hi,
If I compute the nufft operator on a multichannel rawdata, the results is a LinearOperator. How can i extract the images from that ?

nufftOp = MRIReco.NFFTOp((N, N), traj_MR)
nufftOp'*(dcf.*raw_test)

Linear operator
nrow: 90000
ncol: 12
eltype: ComplexF64
symmetric: false
hermitian: false
nprod: 0
ntprod: 0
nctprod: 0

[aTrotier]

Answer from the julia slack community :

Dominique 14 h 01
The convention is that the product of a linear operator with a matrix is a linear operator. That is to avoid materializing large abstract operators. If you want to examine the result, you can convert it to an explicit matrix with Matrix(op), which indeed computes products with each column of the identity.

I tried it and it works :

julia> typeof(Matrix(nufftOp'*(dcf.*raw_test)))
Matrix{ComplexF64} (alias for Array{Complex{Float64}, 2})

julia> size(Matrix(nufftOp'*(dcf.*raw_test)))
(90000, 12)