x = sawtooth(t) generates a sawtooth wave with period 2π for the elements of the time array t. sawtooth is similar to the sine function but creates a sawtooth wave with peaks of –1 and 1. The sawtooth wave is defined to be –1 at multiples of 2π and to increase linearly with time with a slope of 1/π at all other times.
To borrow an example from the same page, you can set the width by specifying how many cycles per second there are. First, 50 cycles ( 
) per second, or width of 
.
) per second, or width of .T = 10*(1/50);
fs = 1000;
t = 0:1/fs:T-1/fs;
x = sawtooth(2*pi*50*t);
plot(t,x)
I can make it wider by reducing the multiplier. For example, 
for a width of 
.
for a width of .figure
x = sawtooth(2*pi*10*t);
plot(t,x)
