The HDF_VD_LONE function returns an array containing all VDatas in an HDF file that are not contained in another VData.
Examples
X = HDF_VD_LONE(fid)
IF N_ELEMENTS(X) EQ 0 THEN $
PRINT, 'No Lone VDatas' ELSE PRINT, 'Lone VDatas:', X
Syntax
Result = HDF_VD_LONE( FileHandle [, MAXSIZE=value] )
Return Value
Returns any lone VDatas within an array. If there are no lone VDatas, HDF_VD_LONE returns -1.
Arguments
FileHandle
The HDF file handle returned from a previous call to HDF_OPEN.
Keywords
MAXSIZE
The maximum number of groups to be returned (the default is to return all known lone VDatas). For example, to return only the first 12 groups:
X = HDF_VD_LONE(fid, MAX=12)
Version History