title: R RecordLinkage Identity
body: <p>I am working with RecordLinkage Library in R.
  I have a data frame with id, name, phone, mail</p>
  
  <p>My code looks like this:</p>
  
  <pre><code>ids = data$id
  pairs = compare.dedup(data, identity=ids, blockfld=as.list(2,3,4))
  </code></pre>
  
  <p>The problem is that my ids are not the same in my result output
  so if I had this data:</p>
  
  <pre><code>id   Name     Phone    Mail
  233  Nathali  2222     nathali@dd.com
  435  Nathali  2222 
  553  Jean     3444     jean@dd.com
  </code></pre>
  
  <p>In my result output I will have something like</p>
  
  <pre><code>id1 id2
  1   2
  </code></pre>
  
  <p>Instead of</p>
  
  <pre><code>id1 id2
  233 435 
  </code></pre>
  
  <p>I want to know if there is a way to keep the ids instead of the index, or someone could explain me the identity parameter.</p>
  
  <p>Thanks</p>