1o paradeigma

x=[0 1 1.5 2.2 3.]
y=[0 1.65 1.45 1.4 1]
plot(x,y)

2o paradeigma

x=-pi:0.01:pi;
y=cos(x);
plot(x,y)

3o paradeigma

x=linspace(-pi,pi, n); opou n=arithmos simeion pou theloume na parei
y=cos(x);
plot(x,y)

% Μια συνάρτηση παρόμοια με τη linspace είναι η logspace η οποία παράγει
διανύσματα με συνιστώσες που ισαπέχουν λογαριθμικά. Για παράδειγμα,
>> logspace(0,2,3)

4o paradeigma-me vasi ta parapano paradeigmata edo dinoume stoixeia pou aforoun to grafima 

>> xlabel('x')
>> ylabel('y=cos(x)')
>> title('Graph of cosine in [-pi, pi]')
>> legend('cos(x)')

5o paradeigma

ezplot('exp(x)', -3, 3 )
ezplot('exp(x)')
ezplot('1./(1+x.^2)')
ezplot('x^2+y^2/4-1')
ezplot('cos(t)', 'sin(t)',[0,2*pi])
ezplot('cos(t)', 'sin(t)',[0,0.75*pi])

6o paradeigma

>> t=0:pi/1000:8*pi;
>> x=cos(t);
>> y=sin(t);
>> comet(x,y)

7o paradeigma-xrisi simvolon kai xromaton

x=-pi:0.01:pi;
y=cos(x);
plot (x, y, 'g')

x=-pi:0.01:pi;
y=cos(x);
plot (x, y, 'o')

8o paradeigma-pollapla grafimata

>> x=0:0.02:2;
>> y=sin(x);
>> z=exp(x);
>> plot( x, y, 'r', x, z, '--')
>> grid
>> legend ( 'sin(x)', 'exp(x)' )

>> x=0:pi/100:2*pi;
>> Y=[cos(x); cos(x).^3; cos(x).^5];
>> plot(x,Y)
>> legend('cos(x)','cos^3(x)', 'cos^5(x)')

t=linspace(-2*pi,2*pi)
f1=sin(t.^2);
f2=(sin(t)).^2;
f3=cos(t.^2);
f4=(cos(t)).^2;
subplot(2,2,1);plot(t,f1);
title('sin(t^2)')
subplot(2,2,2);plot(t,f2);
title('sin(t)^2')
subplot(2,2,3);plot(t,f3);
title('cos(t^2)')
subplot(2,2,4);plot(t,f4);
title('cos(t)^2')

paradeigma 9o-grafimata-ravdogrammata-istogramma

>> x = -2.9:0.2:2.9;
>> y=exp(-x.^2);
>> bar(x,y)
>> colormap cool

>> y=randn(10000,1);
>> hist(y)
>> grid


%se epomenes parousiaseis
%me 2 aples entoles paragoume entiposiaka grafimata(i entoli ezsurf gia 3d grafimata)

z = @(x,y) cos(x).*cos(y);
ezsurf(z)