Ring2D¶
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class
astropy.modeling.functional_models.Ring2D[source] [edit on github]¶ Bases:
astropy.modeling.Fittable2DModelTwo dimensional radial symmetric Ring 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_in : float
Inner radius of the ring
width : float
Width of the ring.
r_out : float
Outer Radius of the ring. Can be specified instead of width.
See also
Notes
Model formula:
f(r) = \left \{ \begin{array}{ll} A & : r_{in} \leq r \leq r_{out} \\ 0 & : \textnormal{else} \end{array} \right.
Where r_{out} = r_{in} + r_{width}.
Attributes Summary
amplitudeparam_namesr_inwidthx_0y_0Methods Summary
evaluate(x, y, amplitude, x_0, y_0, r_in, width)Two dimensional Ring model function. Attributes Documentation
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amplitude¶
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param_names= ('amplitude', 'x_0', 'y_0', 'r_in', 'width')¶
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r_in¶
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width¶
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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_in, width)[source] [edit on github]¶ Two dimensional Ring model function.
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