title: Best way to create shared index between two data sets in Xarray?
body: <p>I have an ordered list of lat, lons and I want to reorder the index of a gridded climate data set to line up with this ordered list.</p>
  
  <p>I am currently using <code>DataSet.sel_points()</code> in Xarray. It is taking around 13 minutes to complete. Is this the expected time it should take for this operation? </p>
  
  <p>My netcdf file is ~750M.</p>
  
  <p>Is there a better way to do this?</p>