I have a .txt files subdivided in two columns for each axis.
Instead of typing each value like the image below I want Julia to do this tedious job for me and create the same plot as below.
input = [[0,1007], [0.02,1038], [0.04,413], [0.07,50]]
plot([x for (x, y) in input], [y for (x, y) in input])
I am not sure how I can "transfer" the values from the .txt file to Julia
This is the purpose of the DelimitedFiles standard library.
julia> using DelimitedFiles
julia> v = readdlm("xyvals.txt"; skipstart=2)
4×2 Matrix{Float64}:
0.0 100.0
0.02 1038.0
0.04 413.0
0.07 50.0
julia> plot(v[:, 1], v[:, 2])
The skipstart=2 tells readdlm to skip past the line containing the x-Axis y-Axis text, since that isn't part of the data to be plotted. readdlm is smart enough to figure out that the data is space-separated, and made of floating point values, so returns a 4×2 Matrix{Float64}.
From that, v[:, 1] (the first column's values) is passed in as the x coordinates for the plot, and v[:, 2] makes the y coordinates.