====== Changing projection library ======

===== Diana version 3.15 =====

 * Using [[http://trac.osgeo.org/proj/|PROJ.4 - Cartographic Projections Library]]

===== Diana version 3.20 =====

  * Coordinates changed from grid (0:nx, 0:ny) to proj-coordinates 
  * Grid resolution moved from class Projection to class Field
  * Transformations to/from lat/lon-values must be done using Projection::convertToGeographic() and Projection::convertFromGeographic()
  * Some classes still use grid-coordinates to some degree  (TrajectoryPlot, FieldEdit) 

== Todo ==

  * Use Field::gridResolutionX/Y, not  Projection::getGridResolutionX/Y() 
  * Add gridResolutionX/Y to class Sat
  * Remove Projection::getGridResolutionX/Y() 
  * Change Field::interpolate(), should use proj coordinates