title: Problems with x label when using labs (ggplot)
body: <p>I was doing a plot with ggplot in R with this code:</p>
  <pre><code>order &lt;- c('Pfu gamma 0min replicate1','Pfu gamma 20min replicate1','Pfu gamma 40min replicate1','Pfu gamma 60min replicate1','Pfu gamma 120min replicate1','Pfu reference replicate1')
  ggplot(data=Genome1,aes(x=factor(Sample,level=order), y=mRNA, fill=Sample)) +
    geom_boxplot() +
    scale_x_discrete(labels=c(&quot;Pfu gamma 0min replicate1&quot;=&quot;0min&quot;,&quot;Pfu gamma 20min replicate1&quot;=&quot;20min&quot;,&quot;Pfu gamma 40min replicate1&quot;=&quot;40min&quot;,&quot;Pfu gamma 60min replicate1&quot;=&quot;60min&quot;,&quot;Pfu gamma 120min replicate1&quot;=&quot;120min&quot;,&quot;Pfu reference replicate1&quot;=&quot;REF&quot;)) +
    stat_boxplot(geom = &quot;errorbar&quot;) +
    labs(title=&quot;mRNA vs Time&quot;, subtitle=&quot;Genome&quot;,xlab=&quot;Sample&quot;,y=&quot;mRNA&quot;)+
    theme(plot.title = element_text(hjust = 0.5),plot.subtitle = element_text(hjust = 0.5))
  </code></pre>
  <p>The problem is that it shows as xlabel &quot;factor(Sample,level=order)&quot;. Is it due to the fact that I used factor in aes? It should show &quot;Sample&quot;.</p>
  <p>I have an additional question: I was trying to do a plot with a dataframe that has 3 columns and about 55000 rows but my computer seems not to support it. Is R not able to do support such size ?</p>