extracting latitude and longitude with given value of i,j

[monsieuralok]

Hi,
given value of (i,j) coordinate, how can we get latitude and longitude for particular element in nextsim? For Example, every processor is working on subdomain, and now I provide (I,J) values of that subdomain and I want to know about latitude and longitude of that element, How can I do that? Not only for LAT, LON, but also for some other variables Thanks a lot Alok