This is a file closer function for NetCDF files, intended for use as parameter file_opener in a call to the function Start() in the package 'startR'. This function complies with the input/output interface required by Start() defined in the documentation for the parameter file_opener of that function.
This function uses the function NcOpen() in the package 'easyNCDF', which in turn uses nc_open() in the package 'ncdf4'.