Cos

class sherpa.models.basic.Cos(name='cos')

Bases: sherpa.models.model.ArithmeticModel

One-dimensional cosine function.

period

The period of the cosine, in units of the independent axis.

offset

The offset (related to the phase) of the cosine.

ampl

The amplitude of the cosine.

See also

Sin, Tan

Notes

The functional form of the model for points is:

f(x) = ampl * cos (2 * pi * (x - offset) / period)

and for an integrated grid it is the integral of this over the bin.

Attributes Summary

thawedparhardmaxes
thawedparhardmins
thawedparmaxes
thawedparmins
thawedpars

Methods Summary

apply(outer, \*otherargs, \*\*otherkwargs)
calc(pars, xlo, \*args, \*\*kwargs)
get_center()
guess(dep, \*args, \*\*kwargs)
reset()
set_center(\*args, \*\*kwargs)
startup()
teardown()

Attributes Documentation

thawedparhardmaxes

thawedparhardmins

thawedparmaxes

thawedparmins

thawedpars

Methods Documentation

apply(outer, *otherargs, **otherkwargs)

calc(pars, xlo, *args, **kwargs)

get_center()

guess(dep, *args, **kwargs)

reset()

set_center(*args, **kwargs)

startup()

teardown()