anchor.diff:  
       + Parameters
           + locatedAt: `j-h6z-6rvBj19wwt1pwHysgn9xou4FlxjuglztmDoszr_ylwqD` (string, required) - compressed points;
  +        + elevationDataSource: `srtm` (string, optional) - data source, where to get elevation; there can be used 'srtm' or 'gtopo'
   
   + Response 200 (application/json)
   
  
positive.code: 
      + Parameters
          + locatedAt: `10.041,22.409` (string, required) - longitude,latitude;
  
  + Response 200 (application/json)
  
  
negative.code:             }
  
  
  ### Get elevation for compressed points [GET /elevation?locatedAt={compressedPoints}&elevationDataSource={dataSource}]
  
  + Request
  
  