title: Deduping Unique Pairs, on Data stored Consecutively, using RecordLinkage
body: <p>I am using <code>recordlinkeage</code> to look for duplicates.  I am using several different searches to identify pairs.  I would like to merge my sets of pairs, to remove duplicates between the two methods.  I would like to have all the unique pairs, that are in either <code>getPairs(y)</code> or <code>getPairs(z)</code>.  As a final product I want a data.frame with all the unique combinations.  </p>
  
  <pre><code>library(RecordLinkage) 
  
  # Making some synthetic data
  x &lt;- rbind( mtcars , mtcars[2,])
  x$name &lt;- rownames( x )
  x$nrid &lt;- sample( 1:1000000 , nrow( x))
  
  y = compare.dedup(
      x,
      blockfld=c("gear", "carb", "am", "name") ,
      phonetic = "name" ,
      phonfun = soundex) 
  
  z = compare.dedup(
      x,
      blockfld=c( "am", "name") ,
      phonetic = "name" ,
      phonfun = soundex) 
  
  # I know that I can see the details of my pairs
  summary(y)
  y &lt;- getPairs(y)
  z &lt;- getPairs(z)
  </code></pre>