Plot a multiple linear regression

Hi everyone,

I don't know how to plot a multiple linear regression with 3 independent variables. Let say I have a function f(x,y,z) = 3x+4y+z. I would like 3 variables are on 3 axes and the result will be expressed by color scale. Anybody used to plot this kind of function, please help me.

Thanks much

Answer 1

[Ameer Hamza]

You can use slice and contourslice to visualize 4D data. For example

[X,Y,Z] = meshgrid(-5:0.1:5);
C =  3*X+4*Y+Z;

figure();
slice(X,Y,Z,C, [-2 0 2], [], [-2 2]);

figure();
contourslice(X,Y,Z,C, -5:1:5, [], []);
view(3);