clear all;
close all;

% Durers matrix

A = [16 3 2 13; 5 10 11 8; 9 6 7 12; 4 15 14 1];


%plotting a graph

t = 0:pi/20:2*pi;
y = exp(sin(t));
plot(t,y,'r-')
xlabel('X Axis')
ylabel('Plot Y Axis')
title('this the title')

% meshgrid

[X,Y] = meshgrid(-8:.5:8);
R = sqrt(X.^2 + Y.^2) + eps;
Z = sin(R)./R;
mesh(X,Y,Z,'EdgeColor','black')

hidden off

surf(X,Y,Z)
colormap hsv
colorbar

surf(X,Y,Z)
colormap hsv
alpha(.4)

surf(X,Y,Z,'FaceColor','red','EdgeColor','none')
camlight left; lighting phong