Parameter

class sherpa.models.parameter.Parameter(modelname, name, val, min=-3.4028234663852886e+38, max=3.4028234663852886e+38, hard_min=-3.4028234663852886e+38, hard_max=3.4028234663852886e+38, units='', frozen=False, alwaysfrozen=False, hidden=False, aliases=None)

Bases: sherpa.utils.NoNewAttributesAfterInit

Represent a model parameter.

Parameters:

• modelname (str) – The name of the model component containing the parameter.
• name (str) – The name of the parameter. It should be considered to be matched in a case-insensitive manner.
• val (number) – The default value for the parameter.
• max, hard_min, hard_max (min,) – The soft and hard limits for the parameter value.
• units (str, optional) – The units for the parameter value.
• frozen (bool, optional) – Does the parameter default to being frozen?
• alwaysfrozen (bool, optional) – If set then the parameter can never be thawed.
• hidden (bool, optional) – Should the parameter be included when displaying the model contents?
• aliases (None or list of str) – If not None then alternative names for the parameter (these are expected to be matched in a case-insensitive manner).

Attributes Summary

alwaysfrozen
default_max
default_min
default_val
frozen
hard_max
hard_min
link
max
min
val

Methods Summary

freeze()	Set the frozen attribute for the parameter.
reset()
set([val, min, max, frozen, default_val, ...])	Change a parameter setting.
thaw()	Unset the frozen attribute for the parameter.
unlink()

Attributes Documentation

alwaysfrozen

default_max

default_min

default_val

frozen

hard_max

hard_min

link

max

min

val

Methods Documentation

freeze()

Set the frozen attribute for the parameter.

See also

thaw()

reset()

set(val=None, min=None, max=None, frozen=None, default_val=None, default_min=None, default_max=None)

Change a parameter setting.

thaw()

Unset the frozen attribute for the parameter.

See also

frozen()

unlink()