Error plotting my graph.

This is my code. The error is: Error using plot Data must be numeric, datetime, duration or an array convertible to double. I am not sure what is causing this.

    t = [0:0.1:6*pi];
    syms k omega t
    S1 = symsum(cos(2*k*omega*t)/(4*k^2 - 1) , k,[1; Inf]);
    y =  1/pi + 0.5*sin(omega*t) - (2/pi)*S1;
    plot(t,y)

[Greg]

What data type (class) is the variable you're trying to plot?

[Adam Makin]

y should just be a number(float) dependent on t. Then im plotting against multiple values of t so a vector?

[Greg]

class(y)

"Vector" is not a data type, it's a shape.

Answer 1

[Star Strider]

Use fplot (with a single value for ‘omega’) or fsurf (with a range of values for ‘omega’).

This works:

syms k omega t
S1 = symsum(cos(2*k*omega*t)/(4*k^2 - 1) , k,[1; Inf]);
y(t,omega) =  1/pi + 0.5*sin(omega*t) - (2/pi)*S1;
fplot(y(t, pi/6), [0 6*pi])

I tried fsurf as well, however it takes forever so I stopped it.