#!/usr/bin/env python
'''
Writes a simple NeXus HDF5 file using h5py with links
according to the example from Figure 2.1 in the Design chapter
'''
import my_lib
INPUT_FILE = 'input.dat'
HDF5_FILE = 'writer_2_1.hdf5'
#---------------------------
tthData, countsData = my_lib.get2ColumnData(INPUT_FILE)
f = my_lib.makeFile(HDF5_FILE) # create the HDF5 NeXus file
nxentry = my_lib.makeGroup(f, 'entry', 'NXentry')
nxinstrument = my_lib.makeGroup(nxentry, 'instrument', 'NXinstrument')
nxdetector = my_lib.makeGroup(nxinstrument, 'detector', 'NXdetector')
tth = my_lib.makeDataset(nxdetector, "two_theta", tthData, units='degrees')
counts = my_lib.makeDataset(nxdetector,
"counts",
countsData,
units='counts',
signal=1,
axes='two_theta')
nxdata = my_lib.makeGroup(nxentry, 'data', 'NXdata')
my_lib.makeLink(nxdetector, tth, nxdata.name + '/two_theta')
#!/usr/bin/env python
'''
Writes the simplest NeXus HDF5 file using
a simple helper library with h5py and numpy calls
according to the example from Figure 1.3
in the Introduction chapter
'''
import my_lib
INPUT_FILE = 'input.dat'
HDF5_FILE = 'writer_1_3.hdf5'
#---------------------------
tthData, countsData = my_lib.get2ColumnData(INPUT_FILE)
f = my_lib.makeFile(HDF5_FILE)
# since this is a simple example, no attributes are used at this point
nxentry = my_lib.makeGroup(f, 'Scan', 'NXentry')
nxdata = my_lib.makeGroup(nxentry, 'data', 'NXdata')
my_lib.makeDataset(nxdata, "two_theta", tthData, units='degrees')
my_lib.makeDataset(nxdata, "counts", countsData,
units='counts', signal=1, axes='two_theta')
f.close() # be CERTAIN to close the file
Writes a NeXus HDF5 file using h5py with links to data in other HDF5 files.
This example is based on ``writer_2_1``.
'''
import my_lib
FILE_INPUT = 'input.dat'
FILE_HDF5_MASTER = 'external_master.hdf5'
FILE_HDF5_ANGLES = 'external_angles.hdf5'
FILE_HDF5_COUNTS = 'external_counts.hdf5'
#---------------------------
# get some data
tthData, countsData = my_lib.get2ColumnData(FILE_INPUT)
# put the angle data in an external (non-NeXus) HDF5 data file
f = my_lib.makeFile(FILE_HDF5_ANGLES) # create an HDF5 file (non-NeXus)
tth = my_lib.makeDataset(f, "angles", tthData, units='degrees')
f.close() # be CERTAIN to close the file
# put the detector counts in an external NeXus HDF5 data file
f = my_lib.makeFile(FILE_HDF5_COUNTS)
nxentry = my_lib.makeGroup(f, 'entry', 'NXentry')
nxinstrument = my_lib.makeGroup(nxentry, 'instrument', 'NXinstrument')
nxdetector = my_lib.makeGroup(nxinstrument, 'detector', 'NXdetector')
counts = my_lib.makeDataset(nxdetector,
"counts",
countsData,
units='counts',