title: Adding a regression line on a ggplot
body: <p>I'm trying hard to add a regression line on a ggplot. I first tried with abline but I didn't manage to make it work. Then I tried this...</p>
  
  <pre><code>data = data.frame(x.plot=rep(seq(1,5),10),y.plot=rnorm(50))
  ggplot(data,aes(x.plot,y.plot))+stat_summary(fun.data=mean_cl_normal) +
     geom_smooth(method='lm',formula=data$y.plot~data$x.plot)
  </code></pre>
  
  <p>But it is not working either.</p>