read a NetCDF file, version 1 and 2 S = read_nc(File) references: tom_mrcread from Wolfgang Baumeister (TOM Matlab toolbox), 2008 used to read MRC electron density map files <http://www.biochem.mpg.de/en/rd/baumeister/tom_e/> netcdfobj contribution on Matlab Central See also: read_hdf4, read_hdf5, read_cdf