Hi Rob, You have to use the projection Lambert Conformal for NDFD files to convert the projection coordinates to the lat/lon coordinates. After you get the grid, get the GridCoordSystem: getCoordinateSystem() http://www.unidata.ucar.edu/software/netcdf-java/v4.0/javadocAll/ucar/nc2/dt/GridDatatype.html Now get the projection: getProjection() http://www.unidata.ucar.edu/software/netcdf-java/v4.0/javadocAll/ucar/nc2/dt/GridCoordSystem.html Now you have the Lambert Conformal project http://www.unidata.ucar.edu/software/netcdf-java/v4.0/javadocAll/ucar/unidata/geoloc/projection/LambertConformal.html Use projToLatLon() to convert the projection coordinates to lat/lon coordinates. In a previous email, there was code to get the GeoX and GeoY projection data. I'll ask the another developer if there is a better way to convert projection coordinates. RObb... Ticket Details =================== Ticket ID: HMB-497600 Department: Support netCDF Java Priority: High Status: Open