How to plot three sets of comparative data in R : <p>I have this dataframe called <code>mydf</code> where I have column <code>Gene_symbol</code> and three different columns (cancers), <code>AML</code>,<code>CLL</code>,<code>MDS</code>. I want to plot the percentage of each gene in these cancers. What would be the good way to represent this in plot?</p>

<pre><code>mydf &lt;- structure(list(GENE_SYMBOL = c("NPM1", "DNMT3A", "TET2", "IDH1", 
"IDH2"), AML = c("28.00%", "24.00%", "8.00%", "9.00%", "10.00%"
), CLL = c("0.00%", "8.00%", "0.00%", "3.00%", "1.00%"), MDS = c("7.00%", 
"28.00%", "7.00%", "10.00%", "3.00%")), .Names = c("GENE_SYMBOL", 
"AML", "CLL", "MDS"), row.names = c(NA, 5L), class = "data.frame")
</code></pre>
