I have a row by col matrix called “stock” and I have a col array called “flow”. I want to add the content of flow to the bottom of stock. I thought the following would work, but it does not: stock = [stock;flow[1,:]] My background is MATLAB, so I thought I could fix the issue using stock = [stock…

A MWE could help. As this works: julia> a = rand(3,3); b = rand(3,3) 3×3 Array{Float64,2}: 0.985678 0.725839 0.162454 0.235461 0.789938 0.304215 0.303247 0.792388 0.332765 julia> [a;b[1,:]'] 4×3 Array{Float64,2}: 0.196151 0.294524 0.332187 0.615515 0.0402781 0.0076374 0.330384 0…

It is worth noting that concatenating matrices like this makes a copy, and thus is not a good idea for large amounts of data, or in performance sensitive inner loops. If you are concatenating vectors to a matrix many times in a loop, using an Array-of-Arrays is sometimes a better option.

There is also https://github.com/JuliaArrays/ElasticArrays.jl

Adding a row to the end of a matrix

New to Julia

Nash June 30, 2020, 8:59am 3

The mistake is mine. I will request to delete the question and post it with better information. It turns out I am not working wit a matrix but a 18×12 Array{Any,2}…

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Adding a row to the end of a matrix

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