Error using plot Vectors must be the same length.

I got the error plotting vectors must be the same length and I'm not sure why. I'm trying to plot the function v against time. In the code I've assigned values to v based on certain inequalities being met.help would be appreciated

function v=pwm(t,T,d)
d = 0.1;
T= 0.2;
t=linspace(0,2,100);
k = mod(T,t);
v(k*T<=t<k+d) = 1;
v(((k + d)*T) <= t < (k + 1)*T) = 0;
plot(t,v)
xlabel("Time(s)");
ylabel("Voltage(V)")

Answer 1

[Walter Roberson]

MATLAB does not have range test operations with the syntax

lower <= variable < upper

You need to break those up as two tests joined by &

A <= t & t < B

[Adam Makin]

hi thanks for thelp. Did this and my equalities look like this:

v(k*T<=t & t < (k+d)) = 1;
v((k + d)*T <= t & t < (k + 1)*T) = 0;

However I'm still receiving the same error as before.

[Walter Roberson]

You have not specified the value v should have for locations where neither mask is true.

I suggest that you start with

v = nan(size(t)) ;