You need to determine which type of file this .nc file is:
http://filext.com/detaillist.php?extdetail=NC
If the file is a netCDF file, search on Google for "netcdf matlab" and
you'll find some tools for reading those files into MATLAB.
If it's in some other format, you'll probably need to either find a reader
(which could be a challenge) or determine the file format and build your own
reader using the file I/O functions in HELP IOFUN.
--
Steve Lord
sl...@mathworks.com