Hi,
I’m working with an array holding 2D points so I can plot a trajectory of an iterative process.
Each point has the type Vector{Float64}, e.g. [1., 2.]
My array has the type Vector{Array{Float64,1}},
E.g.
trajectory[1:3] = Array{Float64,1}[[0.200811, 2.22703], [0.154444, 1.9618], [0.069549, 1.50583]]
Now trying to plot with Plots.jl I’m looking for behaviour like Mathematica’s ListPlot which would put a point on the plane for each vector [x,y] in the array. In general this is what I’d like, does anyone know of a Plots.jl function or formula that works in this way?
I first attempted to use scatter(trajectory) which didn’t work. I realized I need to give it two arrays like:
scatter(xarray, yarray)
This brings me to my main question here, more general than just plotting. Is there a way for me to use bracket notation to access, for example, the first index across all the vectors in my array?
trajectory[1] = [0.200811, 2.22703] returns the first vector in my array, as expected.
trajectory[:, 1] = Array{Float64,1}[[0.200811, 2.22703], [0.154444, 1.9618], ... returns the entire array.
trajectory[1, :] = Array{Float64,1}[[0.200811, 2.22703]] returns an array with just the first vector.
My solution right now is to broadcast getindex across the array:
getindex.(trajectory, 1) = [0.200811, 0.154444, ...
Is there a better solution than this? Am I doing something really ugly by working with an array of vectors? I feel like this is a natural structure for my problem but perhaps not if the syntax isn’t clean.