Help filling a matrix

[Mark P. Esplin]

        I have the data that will make a gray scale image in three separate 1-D 
arrays, x, y, z.  The value of the i'th pixel is z(i) with the x and y 
corrdinates in x(i), and y(i).   The following does what I want, but is there 
a way of doing it without a loop? 

n = length(x);
z2d = zeros(n,n);
for i=1:n
        z2d(x(i),y(i)) = z(i);
endfor

                 -Mark Esplin



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