% TestPeaks.m L Braile 3/18/05
% Show the 'Peaks' function; from the Matlab Help,
% Mesh command.
% The peaks function is:
% z =  3*(1-x).^2.*exp(-(x.^2) - (y+1).^2) ...
%   - 10*(x/5 - x.^3 - y.^5).*exp(-x.^2-y.^2) ...
%   - 1/3*exp(-(x+1).^2 - y.^2);
% It is convenient to view over an x,y space of
% -3 to +3 with an interval (dx = dy) of about
% 0.05 to 0.2
% Peaks can also be viewed with plot3, surf, pcolor, etc.
[X,Y] = meshgrid(-3:.125:3);
Z = peaks(X,Y);
meshc(X,Y,Z);
axis([-3 3 -3 3 -10 5])