There's an FAQ that should get you started.
ASCII data representing gridded data
On 4/13/2012 5:48 AM, vincent le fouest wrote:
I have a file that includes 2D SST, latitudes and longitudes
gridded on x,y indices. I would like to get latitudes and
longitudes not as variables but as x,y axis for my variables SST.
I would be glad to get any tip to do that.