title: enter data into a search field while web scraping in R
body: <p>I would like to find the elevations of multiple data points using this website: <a href="http://mygeoposition.com/" rel="nofollow">http://mygeoposition.com/</a>.  It has one search field where latitude and longitude can be entered; you then press enter and the altitude pops up on the map.  </p>
  
  <p>I have a data set with about 2000 coordinates, and my question was how to use R to automate this task.  I can do basic webscraping, such as downloading tables using the XML package.  I'm just not sure how to writes a program that enters the coordinates into the field and then submits the query.</p>
  
  <p>Thanks for any help!  </p>