How can I plot data in different colors in a 3D plot?

Hi! I am a beginner Matlab user. I have a lot of colorimetric data (L * a * b * coordinates) and I want to represent them inside the L * a * b * 3D color space. In the plot, each point must have the matching color in rgb coordinates. Attached the script for only one point to better understand the problem. P.S. The data are saved in a xls file

rgb = lab2rgb ([46.33  1.17  12.35]);
L = 46.33;
a = 1.17;
b = 12.35;
plot3(a,b,L,'o','MarkerEdgeColor',[0.4699 0.4251 0.3500],'MarkerFaceColor',[0.4699 0.4251 0.3500]);
axis ([-100 100 -100 100 -100 100]);
axis square;
grid on;

[Adam]

Beware that not all 'colours' that you can represent in Lab space will have a valid RGB conversion though. The gamut of Lab space is larger than that of RGB space so some conversions will result in R, G or B values out of range ( < 0 or > 1 ).

[Chiara Genova]

Thank you for the suggestion! Is it possible to use L*a*b* values, instead RGB, in a Matlab plot?

[Adam]

No, you have to convert to RGB to render on the screen.

Answer 1

[KSSV]

Read about scatter and scatter3

[Chiara Genova]

Thank you very much! Using scatter3 I think i solved the problem.