NeXus File Layout#

SPEC data files contain data from one or more measurements called scans written according to the Standard Data-File Format. 1 Each scan is numbered (where the number is not necessarily unique within a data file). NeXus files are written 2 as HDF5 files with a tree structure 3 where the groups use the NeXus base class 4 definitions.

HDF5 files are binary (not human readable); in this documentation, the tree structure (hierarchy) of the file will be shown. Various terms are shown symbolically, as described in the next table.

Contents

1

SPEC Standard Data-File Format : https://certif.com/spec_manual/mac_3_13.html

2

NeXus objects and terms: https://manual.nexusformat.org/design.html#nexus-objects-and-terms

3

NeXus tree structure: https://manual.nexusformat.org/introduction.html#example-of-a-nexus-file

4

NeXus groups (base classes): https://manual.nexusformat.org/classes/base_classes/