representing the signal in matlab??

[buts101]

hello there!!!
i want to define the signal which is represented by figure...like rectangular...sawtooth...etc...in matlab. plz give me the coding to do so...

eg. x(t)==t for t<1 and t>0
==1 for t>1
==0 otherwise..

thank you

 

[RDX*]

Heres two ways of making a sawtooth-signal.

t=0:0.1:10;
x=zeros(1,length(t));
for index=1:length(t)
    if t(index)<1
    x(index)=t(index);
    end
end
plot(x)

and a vector based

t=0:0.1:10;
n=1/(t(2)-t(1));
x=[ones(1,n) zeros(1,length(t)-n)];
x=x.*t;
plot(x)

if you have Signal Processing Toolbox there is a sawtooth function.

eg.
fs = 10000;
t = 0:1/fs:1.5;
x = sawtooth(2*pi*50*t);
plot(t,x), axis([0 0.2 -1 1])