[Nexus] WARNING: hdfview 2.5 [SEC=UNCLASSIFIED]

FRANCESCHINI, Ferdi ffr at ansto.gov.au
Thu Oct 15 02:57:34 BST 2009


Hi All,

We have found that version 2.5 of the hdfview program from the hdfgroup
can zero out several bytes at the start of a nexus file, the rest of the
data file is unaffected.  But if then try to read the file using one of
the applications compiled against the napi (eg nxconvert, nxbrowse,
nxdir) it appears to be empty.

The affected bytes are in line 3, byte 73 to byte 96 inclusive.

Question: Does anyone know why the napi needs that byte pattern?

Ferdi Franceschini
Bragg Institute, Building 82
Australian Nuclear Science and Technology Organisation
PMB 1, Menai NSW 2234 AUSTRALIA


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