MATLAB: Surf plot with a mask

masksurf

Hi,

I'd like to plot an elevation map with surf, and it work quite well.

Howevr I'd like to color the surface not basing on Z bat basing on another matrix I have that is a logical mask.

I do not want to make transparent or not, I want two different colors basing on the mask.

How can I do?

Thanks

Best Answer

Use CData property:

[X,Y] = meshgrid(-5:5);
Z = -X.^2-Y.^2;
C = rand(size(Z));
surf(X,Y,Z,'Cdata',C)

Related Solutions

MATLAB: How i can solve this problem? Pleas!

Your ‘T’ matrix must become a cell array. See my sample of ‘T’ for an example.

Once you do that, I would do something like this:

Y = [12.004
    13.1573 
    11.1665  
    11.8082    
    12.2129   
    12.8075   
    12.4167  
    11.5708   
    12.5798    
    13.7489];
T={'cluster2'; 'cluster1'; 'cluster3'; 'cluster9'; 'cluster0'; 'cluster7'; 'cluster4'}; % Sample Of Cell Array
[UnqClust,~,idx] = unique(T);                                                           % Unique Values & Locations
Out = Y(idx);                                                                           % Mapped Output
for k1 = 1:length(idx)
    fprintf(1, '\t%s\t%.4f\n', T{k1}, Out(k1))              % Demonstration Output (Delete Loop)
end
  cluster2  11.1665
  cluster1  13.1573
  cluster3  11.8082
  cluster9  12.4167
  cluster0  12.0040
  cluster7  12.8075
  cluster4  12.2129

MATLAB: Mask

A "mask" is binary in Matlab. It is the mask only! If you want to get the pixel values inside the mask, you either multiply the mask with the image matrix (size remians the same) or use the mask for indexing (result is the masked rectangle only).

Please post your code and explain, what you want to achieve.

Best Answer

Related Solutions

MATLAB: How i can solve this problem? Pleas!

MATLAB: Mask

Related Question