Plotting a single point (x, y, z) in three dimensional space using R

Question

I am trying to plot one single (x, y, z) point in 3 dimensional space, similar to the graph here:

I have tried using the scatter3d function from the rgl library, however I am stuck over how to get the point itself. I tried the following:

scatter3d(x=-4, y=0, z=-1)

which resulted in:

I am not sure how to structure the data to get the point. Is there another library that I could use which is better suited for this? Or am I using this function the wrong way?

Answer 1

To reproduce your first plot

library(rgl)
x=2
y=3
z=1
plot3d(x, y, z, col = rainbow(1000), xlim = c(-4,4), ylim = c(-4, 4), zlim = c(-2, 2))
abclines3d(2, 3, 1, a = diag(3), col = "gray")