title: How to draw relative frequency table
body: <pre><code>Src=as.factor(c("nc","us","us","nc","nc","ci","nn","pr","nc","nc","ak","ak","ak","ak","ci","hv","ak","ci","nc","nc"))
  Version = as.factor(c(0,4,7,0,0,0,9,0,0,0,1,1,1,1,0,2,1,0,0,0))
  table(Src,Version)
  </code></pre>
  
  <p>Output:</p>
  
  <pre><code>    Version
  Src  0 1 2 4 7 9
    ak 0 5 0 0 0 0
    ci 3 0 0 0 0 0
    hv 0 0 1 0 0 0
    nc 7 0 0 0 0 0
    nn 0 0 0 0 0 1
    pr 1 0 0 0 0 0
    us 0 0 0 1 1 0
  </code></pre>
  
  <p>Instead of showing the counted numbers, can I instead show relative frequencies?</p>