PriorParameter#

class gammapy.modeling.PriorParameter(name, value, unit='', scale=1, min=nan, max=nan, error=0)[source]#

Bases: Parameter

Attributes Summary

`conf_max`	Confidence maximum value as a `float`.
`conf_min`	Confidence minimum value as a `float`.
`error`
`factor`	Factor as a float.
`factor_max`	Factor maximum as a float.
`factor_min`	Factor minimum as a float.
`frozen`	Frozen (used in fitting) (bool).
`is_norm`	Deprecated since version 1.2.
`max`	Maximum as a float.
`min`	Minimum as a float.
`name`	Name as a string.
`norm_parameters`	Deprecated since version 1.2.
`prior`	Prior applied to the parameter as a `Prior`.
`quantity`	Value times unit as a `Quantity`.
`scale`	Scale as a float.
`scale_method`	Method used to set `factor` and `scale`.
`scan_max`	Stat scan maximum.
`scan_min`	Stat scan minimum.
`scan_n_sigma`	Stat scan n sigma.
`scan_values`	Stat scan values as a `ndarray`.
`type`
`unit`	Unit as a `Unit` object.
`value`	Value = factor x scale (float).

Methods Summary

`autoscale`()	Autoscale the parameters.
`check_limits`()	Emit a warning or error if value is outside the minimum/maximum range.
`copy`()	Deep copy.
`prior_stat_sum`()
`to_dict`()	Convert to dictionary.
`update_from_dict`(data)	Update parameters from a dictionary.

Attributes Documentation

conf_max#

Confidence maximum value as a float.

Return parameter maximum if defined, otherwise return the scan_max.

conf_min#

Confidence minimum value as a float.

Return parameter minimum if defined, otherwise return the scan_min.

error#

factor#: Factor as a float.

factor_max#

Factor maximum as a float.

This factor_max = max / scale is for the optimizer interface.

factor_min#

Factor minimum as a float.

This factor_min = min / scale is for the optimizer interface.

frozen#: Frozen (used in fitting) (bool).

is_norm#: Deprecated since version 1.2: The is_norm attribute is deprecated and may be removed in a future version.

max#: Maximum as a float.

min#: Minimum as a float.

name#: Name as a string.

norm_parameters#: Deprecated since version 1.2: The norm_parameters attribute is deprecated and may be removed in a future version.

prior#: Prior applied to the parameter as a Prior.

quantity#: Value times unit as a Quantity.

scale#: Scale as a float.

scale_method#: Method used to set factor and scale.

scan_max#: Stat scan maximum.

scan_min#: Stat scan minimum.

scan_n_sigma#: Stat scan n sigma.

scan_values#: Stat scan values as a ndarray.

type#

unit#: Unit as a Unit object.

value#: Value = factor x scale (float).

Methods Documentation

autoscale()#

Autoscale the parameters.

Set factor and scale according to scale_method attribute.

Available scale_method.

scale10 sets scale to power of 10, so that abs(factor) is in the range 1 to 10
factor1 sets factor, scale = 1, value

In both cases the sign of value is stored in factor, i.e. the scale is always positive. If scale_method is None the scaling is ignored.

check_limits()#: Emit a warning or error if value is outside the minimum/maximum range.

copy()#: Deep copy.

prior_stat_sum()#

to_dict()[source]#: Convert to dictionary.

update_from_dict(data)#: Update parameters from a dictionary.