By default, the axes will go from smaller to larger number, starting from the point "nearest" you, moving "away". It seems like you probably want to set both the XDir and YDir properties to reverse. That will change this
N = 17;
rng default
scatter3(rand(N,1),rand(N,1),rand(N,1))
to this
rng default
scatter3(rand(N,1),rand(N,1),rand(N,1))
set(gca,"XDir","reverse","YDir","reverse")
so that the origin is now in the "far" corner. But I'm not sure if this is what you mean, because on your plot it looks like YDir was already reversed, so maybe you knew about that already?
