• The functions nc_put_var/nc_get_var and nc_put_att/nc_get_att are used to write and read data of user-defined type.

  /* Write an attribute of any type. */
  EXTERNL int
  nc_put_att(int ncid, int varid, const char *name, nc_type xtype, 
  	   size_t len, const void *op);
  
  /* Read an attribute of any type. */
  EXTERNL int
  nc_get_att(int ncid, int varid, const char *name, void *ip);
  

2010 Unidata NetCDF Workshop > Using Groups and NetCDF-4 Types