How to color points in scatter plot by value?

[MichaelGao]

@VivMendes

Interestingly, the piece of code that @kristoffer.carlsson provided above can easily render a 3D scatter which is capable of displaying 4 dimensions by using color.

Impressive!
How should I add lines between points in a plot like this?
Can this be done with PGFPlotsX?

[alex-s-gardner]

This can also be done using Makie.jl:

Makie recipe for creating a scatter plot with points colored by value

This is much easier than I had thought, for anyone that comes next here is the recipe (See Makie docs has a more generic scatter example and examples for colored lines: using CairoMakie # create synthetic data n = 1000; x = 1:n; y = sin.(collect(x) .* .05); z = vcat(1:n/2, n/2:-1:1) .- n/4 # set color axis limits which by default is automatically equal to the extrema of the color values colorrange = [-n/4, n/4]; # choose color map [https://docs.juliahub…

[Fourier]

Because I havent seen that solution here. I just do it like this:

using Plots
x = rand(100)
y = rand(100)
z = x.^2 + y.^2 + 0.1randn(100)
scatter(x, y, zcolor=z)
savefig("scatter_plot.png")

[rafael.guerra]

@Fourier

zcolor=z

For your information, zcolor is one of the aliases for the marker_z attribute (see Plots.jl series attributes). So, this is the same as the post above.