%% Adding Plots to an Existing Graph
%% This example shows

[x,y,z] = peaks;
% Create surface plot
surf(x,y,z)
% Remove edge lines a smooth colors
shading interp
% Hold the current graph 
hold on
% Add the contour graph to the pcolor graph
contour3(x,y,z,20,'k')
% Return to default
hold off

% Copyright 2015 The MathWorks, Inc.