title: Plotting multiple random walks
body: <p>I am new to R and watched a YouTube video with the following code:</p>
  
  <pre><code>require(yuima)
  m1 &lt;- setModel(drift='mu*s', diffusion='sigma*s', 
     state.var='s', time.var='t', solve.var='s', xinit=100)   
  x &lt;- simulate(m1, true.param = list(mu=.1, sigma=.2))  
  plot(x)
  </code></pre>
  
  <p>The above is mu multiplied by s, and sigma multiplied by s.
  I am trying to plot 1000 of these simulations onto one plot with multi-colored lines.  Any input would be greatly appreciated.</p>