# RGB colors in scatter3

1 visualización (últimos 30 días)
Mario Trevino el 5 de Sept. de 2013
Comentada: Image Analyst el 11 de Jul. de 2014
Im trying to plot n [X,Y,Z] dots in 3d with their colors given by C which is a nx3 matrix describing the RGB colors for each dot (graded colors).... but its not working!!!!
scatter3(X,Y,Z,S,C, 'filled')
any suggestions?
##### 0 comentariosMostrar -2 comentarios más antiguosOcultar -2 comentarios más antiguos

Iniciar sesión para comentar.

Geert el 5 de Sept. de 2013
Have a look at the example in the help:
[x,y,z] = sphere(16);
X = [x(:)*.5 x(:)*.75 x(:)];
Y = [y(:)*.5 y(:)*.75 y(:)];
Z = [z(:)*.5 z(:)*.75 z(:)];
S = repmat([1 .75 .5]*10,numel(x),1);
C = repmat([1 2 3],numel(x),1);
scatter3(X(:),Y(:),Z(:),S(:),C(:),'filled')
##### 4 comentariosMostrar 2 comentarios más antiguosOcultar 2 comentarios más antiguos
Mario Trevino el 5 de Sept. de 2013
ok great... found the problem. I defined each column of C within the range 0-255, and this is what was making the plotter fail. Once I normalized my colors dividing by 255 it all worked nice. thanks!!!!!!!
Image Analyst el 11 de Jul. de 2014
Yes, any function in MATLAB that takes a 3 element numerical array for color must be in the range 0-1 instead of 0-255. If you have 255 numbers, for example determined them from some artwork in Photoshop of wherever, then you can just divide by 255
color255 = [100, 150, 240];
myColor = color255 / 255; % Then use this array in scatter() or wherever...

Iniciar sesión para comentar.

### Categorías

Más información sobre Surface and Mesh Plots en Help Center y File Exchange.

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by