Question

I am trying to plot a series of 2D matrices containing ones and zeros (effectively black and white images) in MATLAB, which are ordered in 3D.

The code I have so far is:

function PlotthreeD()

 numrows = 100;
 numcols = 100;

 Plot1 = zeros(numcols);
 Plot1(20:50,20:50) = 1;

 Plot2 = zeros(numcols);
 Plot1(20:70,20:90) = 1;

 Plot3 = zeros(numcols);
 Plot3(20:50,20:50) = 1;

         B = cat(3, Plot1, Plot2, Plot3);

 figure; 
 offset = 100;
 hold on; 

 for i=1:3; 
     mesh(B(:,:,i)+offset*(i));
 end

end

Is there a drawing command (rather than mesh) that will allow me show the 2D arrays as solid shapes (where the matrix elements equal 1), rather than having a these regions shown as being raised (as they are with mesh)?

Answer 1

This will do it:

numrows = 100;
numcols = 100;
close all;

Plot1 = zeros(numcols);
Plot1(20:50,20:50) = 1;

Plot2 = zeros(numcols);
Plot2(20:70,20:90) = 1;

Plot3 = zeros(numcols);
Plot3(20:50,20:50) = 1;

B = cat(3, Plot1, Plot2, Plot3);
B(B==0)=NaN;

figure;
offset = 100;
hold on;

for i=1:3;
    surf(B(:,:,i)+offset*(i)); 
end