title: Y axis won't start at 0 in ggplot
body: <p>In this plot I order the ylim to be 0, but the y axis seems to start at -1 anyway, which is very annoying. I really like the y axis to stat at 0. Solutions?</p>
  
  <pre><code>sub1=subset(table.popstat,POPSTAT==1,select=c(1,3))
  ggplot(sub1, aes(x=YR,y=Freq)) + ylim(0,15) +
    geom_bar(stat='identity') + 
    annotate("text",x=3,y=14.9,label="Population status",cex=10)
  </code></pre>
  
  <p>Also, I have 30 plots like this, and there are many different ranges on the y axis. I need a generic code that places the text in the upper left corner of the graph no matter what the ymax is. Doable?</p>