title: python coordinate transformation / interpolation possible?
body: <p>Hy there!</p>
  
  <p>I am actually working on some geodata datasets. I am using python and pygrib to read the original data. pygrib returns wonderfull longitude/latitude values for my "rotated" grid (see plot). What i have to do is to bring the data onto an orthogonal geo-longitude/latitude (so a meshgrid). 
  It is no problem to do it by hand BUT i think that python has a package which does it for me? If yes i hanvt found any good hint in the web.</p>
  
  <p>pygrib seems to know enough about the projection to compute my latlons. So i guess that there is a package somewhere which transforms (with interpolation) my data into another projection? :)</p>
  
  <p>Probably there is someone out there which can give me some hints and/or links. Would be great! </p>
  
  <p>Thanks and best wishes
  Reto Stauffer, Austria</p>
  
  <p><img src="https://i.imgur.com/ob5bH.jpg" /></p>