Hi, I have a vector that has 100 rows and two columns. I want to select the second column. Julia gives an error with the following command. Can anyone help me? box=[0,1,0,1] ninit= 100 pdp = [LinRange(box[1],box[2],ninit),box[3].+1e-4.*rand(ninit,1)] pdp_end = ninit tmp = pdp[1:pdp_end,2]

[image] biglari: a vector that has 100 rows and two columns you don’t: julia> pdp = [LinRange(box[1],box[2],ninit),box[3].+1e-4.*rand(ninit,1)] 2-element Vector{AbstractArray{Float64}}: range(0.0, stop=1.0, length=100) [6.5964924515518e-5; 4.554730444196513e-5; … ; 7.90834654968606e-5; 6.…

Thank you for your answer. This command gives me a vector with 200 rows and a column. I want a matrix with 100 rows and 2 columns.

Previous solution works in Julia 1.7 or later. You can simply replace the comma , separating the two vectors in your original pdp assignment, by space.

Thanks for your answer. My problem was solved

Vector column

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Vector column

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