Triangle wave starting at the origin

Hi, I want my triangle wave to start at the origin, how can I do that?

This is my code:

t = linspace(0,6.840,10000);
x = 19.6.*sawtooth(t,0.5);

plot(t,x)
grid on
xticks([0 1 2 3 4 5 6 6.840])
yticks([-19.6 -15:5:15 19.6])

Answer 1

[DGM]

You can just offset t

t = linspace(0,6.840,10000);
x = 19.6.*sawtooth(t+pi/2,0.5);
plot(t,x)
grid on
xticks([0 1 2 3 4 5 6 6.840])
yticks([-19.6 -15:5:15 19.6])

[David Cuenca]

Thank you mate

Answer 2

[Walter Roberson]

t = linspace(0,6.840,10000);
x = 19.6.*(1 + sawtooth(t,0.5));

plot(t,x)
grid on
xticks([0 1 2 3 4 5 6 6.840])
yticks([-19.6 -15:5:15 19.6])