color for surf 3d

i represent a 3d surf in my code and i want color the result blue not black i use this code :

 h=surf(xImage,yImage,zImage,...    
        'CData',rgbPic,...
        'FaceColor','interp','EdgeColor','none','LineStyle','none');

[Star Strider]

See also: http://www.mathworks.com/matlabcentral/answers/260957-how-draw-in-surf-in-color-blue

Answer 1

[Geoff Hayes]

Samer - what happens if you just set the FaceColor property to blue as

h=surf(xImage,yImage,zImage,...    
      'CData',rgbPic,...
      'FaceColor','blue','EdgeColor','none','LineStyle','none');

[samer mahmoud]

hello Geoff is not working when i set facecolor blue give me a background blue but when i set FaceAlpha 0.5 give color gray and now i want how i give blue for this. thnk you

[Geoff Hayes]

Can you attach your data for xImage, yImage, and zImage?

[samer mahmoud]

rgbPic = im2uint8(rgbPic);
axis([-500 500 -500 500 -500 500]);
xlabel('x');
ylabel('y');
zlabel('z');
xImage = [-300 300; -300 300];   
yImage = [0 0; 0 0];             
zImage = [300 300; -300 -300];

[Geoff Hayes]

Okay, how about for the rgpPic?

[samer mahmoud]

foreground = imfill(foreground,'holes');

bwPicSize = size(foreground); rgbPic = zeros(bwPicSize(1),bwPicSize(2),3); rgbPic(foreground==0)=255; rgbPic(:,:,2) = rgbPic(:,:,1); rgbPic(:,:,3) = rgbPic(:,:,1);

[samer mahmoud]

this about all of rgbPic

[Geoff Hayes]

Samer - can you attach the rgbPic data as a mat file? That way, someone can use it with surf to try and colour it blue.

[samer mahmoud]

Geoff i convert a image to grayscale and binary after i detect the background and transfer image to binary

[Walter Roberson]

If it is a grayscale or binary image, why is the variable name "rgbPic" ?

Sigh.

bluemap = [0 0 1; 0 0 0];
colormap(bluemap);

[samer mahmoud]

thnx walter but not work

[Walter Roberson]

In your other thread where the discussion is taking place, rgbPic is not binary, but in this thread it is??

It gets really confusing for people when you are discussing two different versions of code without making clear what the difference is between the two versions.

[samer mahmoud]

k