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Common
The additional analysis function are passed to the cube workflow by adding a det_proc
keys to the detector definition dictionary. The content of this key must be another dictionary with the following sctructure:
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{
name: '<function_name>' # must be the exact DetObjectFunc name,
'func_kwargs1': <...>,
'func_kwargs2': <...>,
...
} |
The function <function_name>
will then be applied to the summed binned detector data and its output will be saved under <detector name>_variable
in the binned hdf5 file, in addition to the full detector data.
Azimuthal integration
pyFAI
Detector definition section with azimuthal integration of the Rayonix:
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# ##### DETECTORS ########################################################################
# List detectors to be cubed. Area detector have additional options such as threshold
# Full images will always be saved.
# More area detector can be defined following the same syntax, and adding them to varList
detDict = {'source':'Rayonix',
'full':1,
'image':1,
'thresADU':-1e5,
'common_mode':0}
pix_size = 176e-6
func_kwargs = {
'name': 'azav_pyfai', # must be the name of the smalldata_tools DetObjectFunc
'ai_kwargs': {'dist':1, 'poni1':960*pix_size, 'poni2':960*pix_size},
'npts': 512,
'int_units' : '2th_deg',
'return2d' : False
}
det_proc = [func_kwargs]
detDict['det_proc'] = det_proc
# make list of all variables to be added to the cube
varList = ['ipm_dg1/sum','ipm_dg2/sum', detDict]
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The h5 resulting from this detector definition then contains:
Rayonix_azav (Array)
Rayonix_data (Array)
Rayonix_nEntries (Array)
Rayonix_q (Array)
The available keyword arguments to pass to the azav_pyfai function are
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"""
Parameters
----------
name: str
Function name
mask: array, optional
User defined mask. 1 for valid pixels.
return2d: bool, optional
Return a 2d (q,phi). Default: False
poni_file: str, Path object, optional
Path to a pyFAI calibration file
ai_kwargs: dict, optional
Arguments to pyFAI.AzimuthalIntegrator. Either this parameter or a calib file is necessary
For arguments see: https://pyfai.readthedocs.io/en/master/api/pyFAI.html#module-pyFAI.azimuthalIntegrator
pol_factor: float, optional
Polarization factor. Default 1. Passed to integrate1d or integrate2d.
npts_radial: int, optional
Number of points for the radial binning. Default 256.
npts_az: int, optional
Number of points for the azimuthal binning. Default 360. Only used for the 2d integration.
azav_kwargs: dict, optional
Additonal arguments to pass to integrate1d or integrate2d.
See https://pyfai.readthedocs.io/en/master/api/pyFAI.html#pyFAI.azimuthalIntegrator.AzimuthalIntegrator.integrate1d
""" |
Fourier transform
TBD
Autocorrelation
TBD
Overview
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