Disk2D¶
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class
astropy.modeling.functional_models.
Disk2D
[source] [edit on github]¶ Bases:
astropy.modeling.Fittable2DModel
Two dimensional radial symmetric Disk model.
Parameters: amplitude : float
Value of the disk function
x_0 : float
x position center of the disk
y_0 : float
y position center of the disk
R_0 : float
Radius of the disk
Other Parameters: fixed : a dict
A dictionary
{parameter_name: boolean}
of parameters to not be varied during fitting. True means the parameter is held fixed. Alternatively thefixed
property of a parameter may be used.tied : dict
A dictionary
{parameter_name: callable}
of parameters which are linked to some other parameter. The dictionary values are callables providing the linking relationship. Alternatively thetied
property of a parameter may be used.bounds : dict
eqcons : list
A list of functions of length
n
such thateqcons[j](x0,*args) == 0.0
in a successfully optimized problem.ineqcons : list
A list of functions of length
n
such thatieqcons[j](x0,*args) >= 0.0
is a successfully optimized problem.See also
Notes
Model formula:
\[\begin{split}f(r) = \left \{ \begin{array}{ll} A & : r \leq R_0 \\ 0 & : r > R_0 \end{array} \right.\end{split}\]Attributes Summary
R_0
amplitude
param_names
x_0
y_0
Methods Summary
evaluate
(x, y, amplitude, x_0, y_0, R_0)Two dimensional Disk model function Attributes Documentation
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R_0
¶
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amplitude
¶
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param_names
= ('amplitude', 'x_0', 'y_0', 'R_0')¶
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x_0
¶
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y_0
¶
Methods Documentation
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static
evaluate
(x, y, amplitude, x_0, y_0, R_0)[source] [edit on github]¶ Two dimensional Disk model function
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