title: How do I make my axis ticks face Inwards in ggplot2
body: <p>I have made a barplot using ggplot2 and the Journal I need to submit to requires that the axis ticks face inwards. </p>
  
  <p>This is the text representation of my data (dput)</p>
  
  <pre><code>Mean.Inc.melt&lt;-structure(list(Var1 = structure(c(1L, 2L, 1L, 2L, 1L, 2L), .Label = c("Harvest","Pre-Harvest"), class = "factor"), Var2 = structure(c(1L, 1L, 2L, 2L, 3L, 3L), .Label =c("Dip A", "Trip A", "Trip B"), class = "factor"), value = c(2, 34, 1, 36, 3, 46)), .Names =c("Var1", "Var2", "value"), row.names = c(NA, -6L), class = "data.frame")
  </code></pre>
  
  <p>Including the standard error</p>
  
  <pre><code>SEM.Inc.melt&lt;-structure(list(Var1 = structure(c(1L, 2L, 1L, 2L, 1L, 2L), .Label = c("Harvest", "Pre-Harvest"), class = "factor"), Var2 = structure(c(1L, 1L, 2L, 2L, 3L, 3L), .Label = c("Dip A", "Trip A", "Trip B"), class = "factor"), value = c(1, 12, 1, 2, 1, 6)), .Names = c("Var1", "Var2", "value"), row.names = c(NA, -6L), class = "data.frame")
  </code></pre>
  
  <p>This is the script I have used so far to create the plot:</p>
  
  <pre><code>ggplot(Mean.Inc.melt,aes(x=Var2,y=value,fill=Var1))+
    geom_bar(stat='identity',position=position_dodge(),colour='black')+
    scale_fill_manual(values=c('#000000','#FFFFFF'))+
    geom_errorbar(aes(ymin=Mean.Inc.melt$value-SEM.Inc.melt$value,
                      ymax=Mean.Inc.melt$value+SEM.Inc.melt$value),width=.1,
                      position=position_dodge(.9))+
    xlab('Treatment')+
    ylab('Percentage Incidence (%)')+
    ylim(0,60)+
    scale_y_continuous(expand=c(0,0),limits=c(0,60))+
    scale_x_discrete(expand=c(0,0))+
    theme_bw()+
    theme(axis.line=element_line(colour='black'),panel.grid.major=element_blank(),
          panel.grid.minor=element_blank(),panel.border=element_blank(),
          panel.background=element_blank())+
    geom_vline(xintercept=0)+theme(legend.position='none')
  </code></pre>
  
  <p>I guess the point is - does anyone know if there a way I can get my axis to face inwards?</p>