2D grafika

x = linspace(0, 2*pi, 30);
y = sin(x);
z = cos(x);
plot(x,y,x,z)
grid
xlabel( 'Independent Variable X')       % x-axis label
ylabel( 'Dependent Variables Y and Z')  % y-axis label
title(`Sine nad Cosine Curves')         % title the plot
text(2.5, 0.7, 'sin(x)')
gtext('cos(x)')
axis off
axis on, grid off
axis ij
axis ('square', 'equal')
axis ('xy', 'normal')

x = linspace(0, 2*pi, 30);
y = sin(x);
z = cos(x);
plot(x,y)
hold on
plot(x,z,'m')
hold off


% ezplot('sin(x)/(1+x^2)')
fplot('sin(x)/(1+x^2)')
fplot( @(x) sin(x)./(1+x.^2)), grid

% ezplot('2*cos(t)','2*sin(t)')
fplot(@(t) 2*cos(t), @(t) 2*sin(t)), grid

% ezplot('x^2+y^2-4')
fimplicit(@(x,y) x.^2 + y.^2 -4)
fimplicit(@(x,y) x.^2 + y.^2 -4), grid, axis equal, axis([-3 3 -3 3])

ezpolar('sin(t)/t', [-6*pi,6*pi])
% ezplot('(sin(t)/t)*cos(t)','(sin(t)/t)*sin(t)',[-6*pi,6*pi])

fplot(@(t) (sin(t)./t).*cos(t), @(t) (sin(t)./t).*sin(t), ...
  [-6*pi,6*pi], 'LineWidth', 2), grid

% h1 = ezplot3('cos(2*pi*t)','sin(2*pi*t)','t',[0,4])
h1 = fplot3( @(t) cos(2*pi*t), @(t) sin(2*pi*t), @(t) t,[0,4])
h1.LineWidth = 2;
h1.Marker = 'square';
get(gca)
set(gca, 'Color', [0.8 0.8 0.8], 'ZLim', [-0.5 5])

%ezsurf('x*y*exp(-(x^2+y^2))')
fsurf(@(x,y) x.*y.*exp(-(x.^2+y.^2)))
fsurf(@(x,y) x.*y.*exp(-(x.^2+y.^2)), [-3 3 -4 4])

%ezsurfc('x*y*exp(-(x^2+y^2))')
%ezmesh('x*y*exp(-(x^2+y^2))')
%ezmeshc('x*y*exp(-(x^2+y^2))')
%ezcontour('x*y*exp(-(x^2+y^2))')
%ezcontourf('x*y*exp(-(x^2+y^2))')

%ezsurf('s*cos(t)', 's*sin(t)', 't', [.4,1], [0,6*pi])
%ezsurf('s*cos(t)', 's*sin(t)', 'floor(t)', [.4,1], [0,6*pi])


% fplot('cos', [0 3*pi])
fplot(@cos, [0 3*pi])

% fplot('sin(z)', [0 3*pi]), grid
fplot(@sin, [0 3*pi]), grid

% fplot('[cos(x), sin(x)]', [0 3*pi]), grid
fplot(@(x) [cos(x), sin(x)], [0 3*pi], 'LineWidth', 2), grid

[x,y] = fplot( @(x) cos(x), [0 3*pi]);
plot(x,y, '-*'), grid

h2 = fplot(@(x) cos(x), [0 3*pi]); grid
x = h2.XData;
y = h2.YData;
plot(x,y, '-*'), grid

x = (0:1/2000:1)';
plot(x,cos(tan(pi*x)))
%fplot('cos(tan(pi*x))', [0 1])
%fplot('cos(tan(pi*x))', [0 1], 1.0e-4)
fplot( @(x) cos(tan(pi.*x)) ) 

function y = f02(x)
y = cos(tan(pi*x));

% fplot('f02', [0 1])
fplot(@f02, [0 1])

x = 0:0.1:4*pi;
z = [cos(x)' sin(x)' sin(x).^2'];
plot(x,z)

plot(peaks)
plot(peaks, rot90(peaks'))
y = 1:40;
plot(peaks(40),y)

subplot_demo, polar_demo, bar_demo, ginput_demo, fill_demo

meshgrid([-2:1:2])
[X, Y] = meshgrid([-2:1:2])
[X, Y] = meshgrid([-2:.1:2]);
Z = X.* exp(-X.^2 - Y.^2);
plot3(X, Y, Z)