tape.analysis.structure_function.macleod_2012.calculator

Module Contents

Classes

Macleod2012StructureFunctionCalculator

This class implements the structure function calculation described in

Attributes

CONVERSION_TO_SIGMA

CONVERSION_TO_SIGMA = 0.74

class Macleod2012StructureFunctionCalculator(lightcurves: List[tape.analysis.structure_function.sf_light_curve.StructureFunctionLightCurve], argument_container: tape.analysis.structure_function.base_argument_container.StructureFunctionArgumentContainer)

Bases: tape.analysis.structure_function.base_calculator.StructureFunctionCalculator

This class implements the structure function calculation described in MacLeod et al. 2012, 2012ApJ…753..106M [https://arxiv.org/abs/1112.0679] MacLeod et al. 2012, Erratum 2014ApJ…782..119M

SF_obs(deltaT) = 0.74 * IQR

Where IQR is the interquartile range between 25% and 75% of the sorted (y(t) - y(t+delta_t)) distribution.

Note that the return value is structure function squared.

Additional references: Kozlowski 2016, 2016ApJ…826..118K [https://arxiv.org/abs/1604.05858]

calculate()

Abstract method that must be implemented by the child class.

calculate_iqr_sf2_statistic(input)

For a given set of binned metrics (in this case delta fluxes) calculate the interquartile range.

Parameters:

input (np.ndarray (N,)) – The delta flux values that correspond to a given delta time bin.

Returns:

Result of calculation defined in MacLeod et al. 2012, Erratum 2014ApJ…782..119M:

SF(dt) = 0.74 * IQR

Return type:

float

static name_id() → str

This method will return the unique name of the Structure Function calculation method.

static expected_argument_container() → type

This method will return the argument container class type (not an instance) that the Structure Function calculation method requires in order to perform it’s calculations.