How to define and plot a piecewise time dependent function

Hello!

I am trying to plot a function that has a certain y value when it is between two variables, but I keep getting an error that reads:

Operands to the || and && operators must be convertible to logical scalar values.

for this line:

if (0<=t) && (t<=e)

Please help!

e = 1;

t=linspace(0,10);
l=numel(t);

for i=1:l
    
if (0<=t) && (t<=e) 
y(i) = (pi/(2*e))*sin((pi/e)*t);
else
y(i) = 0;      
end
plot(t,y)

end

Answer 1

[Star Strider]

The double logic operators (&&, ||) are short-circuit operators and operate only on logical values. They will not work in your situaiton.

Try ‘logical indexing’ instead:

y = @(t,e) (pi/(2*e))*sin((pi/e)*t) .* (0<=t) & (t<=e);

e = 1;
t=linspace(0,10);

figure
plot(t,y(t,e))