using GMT # Play arround with these parameters T = 1; omega = omega = 2pi / T; v = 0.2; t = 0:0.01:5pi; x = v.*t .* cos.(omega .* t); y = v.*t .* sin.(omega .* t); plot(x, y, aspect=:equal, show=true)
Draw a Polar scatter plot with variable symbol size, color and transparency. We will use the default color scale (turbo) and fig size (12 cm).
using GMT teta = 0:0.01:5pi; xf = sqrt.(teta) .* cos.(teta); yf = sqrt.(teta) .* sin.(teta); plot(xf,yf, aspect=:equal, show=true)
From This FEX contribution. The author here wanted to reflect the fact that on a sunflower the seeds close to the center are smaller and have a higher density.
using GMT phi = (sqrt(5)-1)/2; n = 2618; rho = (2:n-1) .^ phi; theta = (2:n-1)*2pi*phi; scatter(rho .* cos.(theta), rho .* sin.(theta), marker=:point, aspect=:equal, show=true)
This time we will also color the seed points in function of r, the distance to the center and pain with a dark background.
using GMT angle = 137.5; # Play with this angle between [137.0 138.0]. Amazing the effect, no? alfa = 2pi * angle / 360; n_seeds = 1500; seeds = 0:n_seeds; r = sqrt.(seeds); ϕ = alfa * seeds; C = makecpt(range=(1,sqrt(n_seeds),1), cmap=:buda); # Color map to paint the seeds scatter(r .* cos.(ϕ), r .* sin.(ϕ), marker=:point, cmap=C, zcolor=r, frame=(fill=20,), aspect=:equal, show=true)
These docs were autogenerated using GMT: v0.44.4