title: Find the nearest X,Y coordinate using R
body: <p>I'm just starting to learn R but would like project done sooner rather than later. It's rather simple: I have an X column and a Y column consisting of X coordinates and Y coordinates. (Working in the NAD27 coordinate system). Going from the first coordinate, I'd like to find the nearest point within the data set and then move onto the next coordinate and find it's nearest point within the same data set. Ideally, it would go through each point and determine the closest point. </p>
  
  <pre><code>point x         y
  1     1601774   14544454
  2     1616574   14579422
  3     1608698   14572922
  4     1602948   14572990
  5     1607355   14573871
  6     1615336   14578178
  7     1603398   14574495
  8     1605153   14570727
  9     1606758   14573845
  10    1606655   14570953
  </code></pre>