Generating sinusoidal wave in MATLAB but I get STRAIGHT line instead??

I am trying to learn about the signals and wave for awhile now, It worked at the beggining but when I added few lines I get now curved line, I know it meant to be easy but not sure whats wrong .. I am using possion distribution !

here is my code..

    function S = trial(lambdaMax,lambda,T)
t = 0;
I = 0;
S = [];
 u = rand;
t = t - log(u)/lambdaMax;
 while t < T
     u = rand;
    if (u <= lambda(t)/lambdaMax)
        I = I+1;
        S(I) = t;
    end
    u = rand;
    t = t - log(u)/lambdaMax;
end

this is the script to run it,,

lambdaMax=50;
T=1;

lambda =@(x) lambdaMax * sin(x); 
S = trial(lambdaMax,lambda,T);
figure
hold on
plot(S,lambda(S),'*')
xlabel('t')
ylabel ('sin(x)')

[Jan]

Do you have a question?

[Susan]

yeah its regarding the Sin wave when I run it I get Curved Line not Sin wave

[Jan]

Well, as far as I remember the sinus *is* a curved line.

Naturally the computations are correct in the sense that Matlab interpretes the shown code correctly. So if you expect a different result, most likely your expectations are wrong.

Please take the time to formulate a question and explain the difference between "curved line" and "sin wave" with any details.

[Susan]

I mean just a straight line but just in different angle perhaps I should not use curved.. its actually straight line and the expected the usual sin curved waves

Answer 1

[Jan]

If you call your function "trial" with T=2*pi you get a full period of a sinusidal curve. With T=1 you get just the first part, which looks almost straight, but it has a small curvature.

[Susan]

Yeah your right.. its working but wasn't clear to me coz it T was 1.. Thank you :)