title: Sample Data in Cosmos (Return every 3rd data point)
body: <p>We are looking to pull a few parameters off a few thousand cosmos documents.  Arrange these and return them to the client for graphing.
  The trouble is the number of points quickly gets into the 10s of 1000s which is much more resolution that the front end needs to spot trends.  It's also SLOW.
  While I can easily return all the data to the API and then sample the data there, it would seem to be more efficient to just skip every 3rd data point or so.</p>
  <p>Is there a way to do something like .Skip(x =&gt; x % 3 == 0) in cosmos?</p>