file_id	IN:	File identifier returned by Hopen
	fieldname	IN:	Field name for the new vdata
	buf	IN:	Buffer containing the records to be stored
	n_records	IN:	Number of records to be stored
	data_type	IN:	Type of data to be stored
	vdata_name	IN:	Name of the vdata to be created
	vdata_class	IN	Class of the vdata to be created

	Purpose	Creates and writes to a single-field vdata.
	Return value	Returns reference number of the newly-created vdata if successful, and FAIL (or -1) otherwise.
	Description	VHstoredata creates a single-field vdata in the file, file_id, and stores data from the buffer buf in it. Vdata name, class name and data type are specified by the parameters vdata_name, vdata_class, and data_type, respectively. Number of records in a vdata is specified by the parameter n_records. Field name is specified by the parameter fieldname.
		Vstart must precede VHstoredata. It is not necessary, however, to call VSattach or VSdetach in conjunction with VHstoredata.
		This routine provides a high-level method for creating single-order, single-field vdatas.
		Note that there are two FORTRAN-77 versions of this routine; one for numeric data (vhfsd) and the other for character data (vhfsdc).

	FORTRAN	integer function vhfsd(file_id, fieldname, buf, n_records, data_type, vdata_name, vdata_class)
		integer file_id, n_records, data_type
		character*(*) vdata_name, vdata_class, fieldname
		<valid numeric data type> buf(*)
		integer function vhfscd(file_id, fieldname, buf, n_records, data_type, vdata_name, vdata_class)
		integer file_id, n_records, data_type
		character*(*) vdata_name, vdata_class, fieldname
		character*(*) buf