3D scatterplot with marker color as a function of fourth variable

Hello,

I would like to make a scatterplot with the variables x, y, and z. The color of the marker should be determined by the value of variable a.

What's the best way to do that?

Cheers,

Tim

[Scott MacKenzie]

How does the 4th variable (a) map onto the other three (x, y, z)?

Answer 1

[Scott MacKenzie]

Assuming you want a separate color for each point...

x = rand(1,100);
y = rand(1,100);
z = rand(1,100);
a = 1:100;

scatter3(x,y,z,50,a,'filled');
colorbar;

[Toby Feld]

That worked, thanks!