You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 6 Next »

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:

{
	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:

# ##### 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]

The h5 resulting from this detector definition then contains:

  • Rayonix_azav (Array)
  • Rayonix_data (Array)
  • Rayonix_nEntries (Array)
  • Rayonix_q (Array)

The possible arguments to pass to the azav_pyfai function are

azav_pyfai documentation
	"""
    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
    """



  • No labels