HDF_ISHDF
 
The 
 
HDF_ISHDF function returns 
 
true (1)  if the file is a Hierarchical Data Format file and false (0) if the file either is 
not
 a Hierarchical Data Format file or does not exist.
CAUTION: 
 
This routine bases its judgement as to whether or not a file is an HDF file on the first few bytes of the file. Therefore, it is possible that HDF_ISHDF will identify the file as an HDF file, but HDF_OPEN will not be able to open the file (because it is corrupted).
 
Calling Sequence
 
Result = HDF_ISHDF(
Filename
)
 
 
Arguments
 
Filename
 
A scalar string containing the name of the file to be tested.