title: Single bar barchart in ggplot2, R
body: <p>I have following data and code: </p>
  
  <pre><code>&gt; ddf
    var1 var2
  1   aa   73
  2   bb   18
  3   cc    9
  &gt; 
  &gt; dput(ddf)
  structure(list(var1 = c("aa", "bb", "cc"), var2 = c(73L, 18L, 
  9L)), .Names = c("var1", "var2"), class = "data.frame", row.names = c(NA, 
  -3L))
  &gt; 
  &gt; 
  &gt; ggplot(ddf,aes(x=var1, y=var2, fill=var1))+ geom_bar(width=1, stat='identity')
  </code></pre>
  
  <p>This creates a barchart with 3 bars. How can I create a single stacked bar from this data. I want to have all these 3 bars stacked on top of each other rather than being separate bars. </p>