Dectris EIGER 2 - Reading Data

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10.2.2. Reading data

[]$_ Example ALBULA

### read the compressed (or uncompressed) container through the master file ###

h5cont = albula.DImageSeries("series_16_master.h5")

### loop over the frames and read out optional data ###

for i in range(h5cont.first(), h5cont.last() + 1):

img = h5cont[i]

### read header items using convenience functions ###

optData = img.optionalData()

## e.g. wavelength ##

wavelength = optData.wavelength()

## threshold energy ##

threshold_energy = optData.threshold_energy()

### Read the header item directly without convenience functions ###

neXusHeader = h5cont.neXus()

### print all header item names with path ###

neXusRoot = neXusHeader.root()

def iterateChildren(parent):

if not hasattr(parent, 'children'):

return set([parent.path()])

else:

paths = set()

for child in parent.children():

paths.update(iterateChildren(child))

return paths

for kid in iterateChildren(neXusRoot):

print kid.neXusPath()

## extract wavelength ##

wavelength = neXusRoot.childElement('/entry/instrument/monochromator/wavelength')

## print value ##

print "wavelength value: ",wavelength.value()

## extract threshold ##

threshold_energy = neXusRoot.childElement('/entry/instrument/detector/threshold_energy')