StdDevUncertainty

class astropy.nddata.StdDevUncertainty(array=None, copy=True)

Bases: astropy.nddata.NDUncertainty

A class for standard deviation uncertainties

Attributes Summary

array
parent_nddata
support_correlated

Methods Summary

propagate_add(other_nddata, result_data)	Propagate uncertainties for addition.
propagate_divide(other_nddata, result_data)	Propagate uncertainties for division.
propagate_multiply(other_nddata, result_data)	Propagate uncertainties for multiplication.
propagate_subtract(other_nddata, result_data)	Propagate uncertainties for subtraction.

Attributes Documentation

array

parent_nddata

support_correlated = False

Methods Documentation

propagate_add(other_nddata, result_data)

Propagate uncertainties for addition.

Parameters:

other_nddata : NDData instance

The data for the second other_nddata in a + b

result_data : ndarray instance

The data array that is the result of the addition

Returns:

result_uncertainty : NDUncertainty instance

The resulting uncertainty

Raises:

IncompatibleUncertaintiesException

Raised if the method does not know how to propagate the uncertainties.

propagate_divide(other_nddata, result_data)

Propagate uncertainties for division.

Parameters:

other_nddata : NDData instance

The data for the second other_nddata in a + b

result_data : ndarray instance

The data array that is the result of the addition

Returns:

result_uncertainty : NDUncertainty instance

The resulting uncertainty

Raises:

IncompatibleUncertaintiesException

Raised if the method does not know how to propagate the uncertainties.

propagate_multiply(other_nddata, result_data)

Propagate uncertainties for multiplication.

Parameters:

other_nddata : NDData instance

The data for the second other_nddata in a + b

result_data : ndarray instance

The data array that is the result of the addition

Returns:

result_uncertainty : NDUncertainty instance

The resulting uncertainty

Raises:

IncompatibleUncertaintiesException

Raised if the method does not know how to propagate the uncertainties.

propagate_subtract(other_nddata, result_data)

Propagate uncertainties for subtraction.

Parameters:

other_nddata : NDData instance

The data for the second other_nddata in a + b

result_data : ndarray instance

The data array that is the result of the addition

Returns:

result_uncertainty : NDUncertainty instance

The resulting uncertainty

Raises:

IncompatibleUncertaintiesException

Raised if the method does not know how to propagate the uncertainties.