How to specify any regions in a 3D-Plot with different colors

Hallo all,

I need your help to solve my problem.

I wanted to create a 3D graph by coloring 3 specific regions with three different colors.

I have predicted deviations of a geometry from a component, now I want to show where deviations are equal and less than 0.5, where deviations are greater than 1, where deviations are between 0.5 and equal and less than 1.

I want to show:

for 'deviations.mat' <=0.5 then plotted with green.

for 'deviations.mat' > 1 then plotted with red.

for 0.5< 'deviations.mat' <=1 then plotted with yellow.

Could you please help me on this.

I would be very grateful to you guys.

Thank you in advance.

here is my full code:

clear all

close all

clc

load('X_achse_of_geometrie.mat');

load('Y_achse_of_geometrie.mat');

load('Z_achse_of_geometrie.mat');

load('deviations.mat')

axes1 = axes('Parent',figure,...

'Position',[0.128214285714286 0.157619047619049 0.775 0.784047619047622]);

plot3(x+denorm_pred, y+denorm_pred, z+denorm_pred ,'color', 'r');

zlabel('Z [mm]');

ylabel('Y [mm]');

xlabel('X [mm]');

title('component with deviations');

view(axes1,[-37.5 30]);

grid(axes1,'on');

legend1 = legend(axes1,'show');

set(legend1,...

'Position',[0.0508333333333333 0.884126986397638 0.180357140196221 0.0869047596341085]);

Thankls

Answer 1

[Benjamin Thompson]

Use index vectors:

Igreen = denorm_pred < 0.5;

Ired = denorm_pred > 1;

Iyellow = denorm_pred >= 0.5 & denorm_pred <= 1;

plot3(x(Ired)+denorm_pred(Ired), y(Ired)+denorm_pred(Ired), z(Ired)+denorm_pred(Ired) ,'color', 'r');

hold on;

plot3(x(Igreen)+denorm_pred(Igreen), y(Igreen)+denorm_pred(Igreen), z(Igreen)+denorm_pred(Igreen) ,'color', 'g');

plot3(x(Iyellow)+denorm_pred(Iyellow), y(Iyellow)+denorm_pred(Iyellow), z(Iyellow)+denorm_pred(Iyellow) ,'color', 'y');

hold off;

[Sam Kalho]

thanks a lot.