title: Standard Error Bars in wrong position on my graph
body: <p>I am trying to graph my data in R for my research project and for some reason on the three graphs I have created my error bars look like this. They are all at the bottom of the bars rather than in the correct spot on the top.</p>
  <p><img src="https://i.stack.imgur.com/PNsSK.png/" alt="" /></p>
  <p>Here is my coding for that specific graph:</p>
  <pre class="lang-r prettyprint-override"><code>ggplot(Epiphyte_Biomass,aes(x=Treatment, y=Epiphyte.Biomass,fill=Treatment))+
      geom_bar(stat=&quot;Identity&quot;)+
      geom_errorbar(aes(ymin=mean(Epiphyte.Biomass)-sd(Epiphyte.Biomass), 
                        ymax=mean(Epiphyte.Biomass)+ sd(Epiphyte.Biomass)), 
     width=0.2)+
     theme_classic()
  </code></pre>