dim_id	IN:	Dimension identifier returned by SDgetdimid
	name	OUT:	Name of the dimension
	size	OUT:	Size of the dimension
	data_type	OUT:	Data type of the dimension scale
	num_attrs	OUT:	Number of attributes assigned to the dimension

	Purpose	Retrieves information about a dimension.
	Return value	Returns SUCCEED (or 0) if successful and FAIL (or -1) otherwise.
	Description	SDdiminfo retrieves the name, size, data type, and number of values of the dimension specified by the parameter dim_id, and stores them in the parameters name, size, data_type, and num_attrs, respectively.
		If the output value of the parameter size is set to 0, then the dimension specified by the dim_id parameter is unlimited. To get the number of records of an unlimited dimension, use SDgetinfo.
		If scale information has been stored for this dimension via SDsetdimscale, the data_type parameter will contain the data type. Valid data types can be found in Table 1A of Section I of this manual. If no scale information has been stored for this dimension, the value returned in the data_type parameter will be 0.
		If the user has not named the dimension via SDsetdimname, a default dimension name of "fakeDim[x]" will be generated by the library, where [x] denotes the dimension index. If the name is not desired, the parameter name can be set to NULL in C and an empty string in Fortran.

	FORTRAN	integer function sfgdinfo(dim_id, name, size, data_type, num_attrs)
		character*(*) name
		integer dim_id, size, data_type, num_attrs