You can find many tutorials in internet. For example, I did one here: http://max2.ese.u-psud.fr/epc/conservation/Girondot/Publications/Blog_r/Entrees/2014/4/27_Comparison_between_packages_RnetCDF%2C_ncdf4_and_ncdf.html Without any reproducibl example, it is impossible to help you further. Sincerely Marc