HDF_VG_LONE

Syntax | Return Value | Arguments | Keywords | Examples | Version History

The HDF_VG_LONE function returns an array containing the IDs of all VGroups in an HDF file that are not contained in another VGroup.

Syntax

Result = HDF_VG_LONE( FileHandle [, MAXSIZE=value] )

Return Value

Returns the IDs of lone VGroups or returns -1 if there are no lone VGroups,.

Arguments

FileHandle

The HDF file handle returned by a previous call to HDF_OPEN.

Keywords

MAXSIZE

The maximum number of groups to return (the default is to return all lone VGroups). For example, to return no more than 12 VGroups, use the command:

X = HDF_VG_LONE(fid, MAX=12) 

Examples

X=HDF_VG_LONE(fid) 
IF X(0) EQ-1 THEN $ 
   PRINT, "No Lone VGroups" ELSE PRINT, "Lone VGroups:", X 

Version History