title: R: How to generate a noisy sine function
body: <p>I am still pretty new to the whole R-thing.</p>
  
  <p>I have the following aim; I have a sine function that describes a calcium particle number over time:
  something like y = a * sin (b*t) + c</p>
  
  <p>Since in reality the generation and removal of calcium is described in stochastic events, I would like to add a random noise term to my function (preferably scalable in average noise amplitude).</p>
  
  <p>Something like z = y + random*Amplitude</p>
  
  <p>can you help me out?</p>
  
  <p>Best</p>