2D drawing – plots and graphs in Matlab

fplot

fplot( 'x.*cos(5*x)' ,

[0 4*pi])

semilogx

semilogy

x=0 : .01 : 2*pi;

semilogy(x,exp(2*x))

loglog

t = 0 : .01 : pi;

x = exp(2*t);

y = 50+exp(t);

loglog(x,y)

grid

polar

t=0 : .01 : 2*pi;

r=sqrt(abs(sin(3*t)));

polar(t,r)

bar

x = 0 : 10;

y = 2*x+3;

bar(x,y)

plotyy

x = 1:.1:10;

y1=exp(-2*x).*cos(x);

y2=exp(2*x);

H =plotyy(x,y1,x,y2);

h1=get(H(1), 'ylabel' );

h2=get(H(2), 'ylabel' );

set(h1, 'string' , 'fun y1' );

set(h2, 'string' , 'fun y2' );

area

x = -2*pi:.01:2*pi;

y = sin(x)./x;

area(x,y)

pie

dat = [5 5 20 30 40];

pie(dat)

hist

y = 20*rand(1,10);

hist(y)

stem

t = -3*pi : 3*pi;

y = cos(t)-2*sin(t);

stem(t,y)

stairs

x = 1 : 10;

y = 2*x;

stairs(x,y)

compass

t = 0 : pi/6 : pi;

x = cos(t);

y = i*sin(t);

z = x + y;

compass(z)

contour

X = -3 : .1 : 3;

[x,y]=meshgrid(X,X);

z = -x^2 + 2*x.*y + y^2;

pl=contour(x,y,z);

clabel(pl)