3-D Visualization

Example: Mapping Data to Color or Transparency

This example displays a surface plot of a functions of two variables. The color is mapped to the gradient of the z data.

• [x,y] = meshgrid([-2:.2:2]);
  z = x.*exp(-x.^2-y.^2);
  surf(x,y,z,gradient(z)); axis tight
  
  
  

You can map transparency to the gradient of z in a similar way.

• surf(x,y,z,'FaceAlpha','flat',...
      'AlphaDataMapping','scaled',...
      'AlphaData',gradient(z),...
      'FaceColor','blue');
  axis tight
  
  
  

Mapping Data to Transparency

Selecting an Alphamap