autogalaxy.profiles.geometry_profiles.SphProfile#

class SphProfile[source]#

Bases: GeometryProfile

A spherical profile, which describes profiles with y and x centre Cartesian coordinates.

Parameters: centre (Tuple[float, float]) – The (y,x) arc-second coordinates of the profile centre.

Methods

`angle_to_profile_grid_from`	Convert a grid of angles, defined in degrees counter-clockwise from the positive x-axis, to a grid of angles between the input angles and the profile.
`dict`	A dictionary representation of the instance comprising a type field which contains the entire class path by which the type can be imported and constructor arguments.
`from_dict`	Instantiate an instance of a class from its dictionary representation.
`from_json`	Load the dictable object to a .json file, whereby all attributes are converted from the .json file's dictionary representation to create the instance of the object
`has`	Does this instance have an attribute which is of type cls?
`output_to_json`	Output the dictable object to a .json file, whereby all attributes are converted to a dictionary representation first.
`radial_grid_from`	Convert a grid of (y, x) coordinates, to their radial distances from the profile centre (e.g.
`transformed_from_reference_frame_grid_from`	Transform a grid of (y,x) coordinates from the reference frame of the profile to the original observer reference frame.
`transformed_to_reference_frame_grid_from`	Transform a grid of (y,x) coordinates to the reference frame of the profile.

radial_grid_from(grid)[source]#

Convert a grid of (y, x) coordinates, to their radial distances from the profile centre (e.g. :math: r = x**2 + y**2).

Parameters: grid (Union[ndarray, Grid2D, Grid2DIterate, Grid2DIrregular]) – The grid of (y, x) coordinates which are converted to radial distances.
Return type: ndarray

angle_to_profile_grid_from(grid_angles)[source]#

Convert a grid of angles, defined in degrees counter-clockwise from the positive x-axis, to a grid of angles between the input angles and the profile.

Parameters: grid_angles (ndarray) – The angle theta counter-clockwise from the positive x-axis to each coordinate in radians.
Return type: Tuple[ndarray, ndarray]

transformed_to_reference_frame_grid_from(grid)[source]#

Transform a grid of (y,x) coordinates to the reference frame of the profile.

This performs a translation to the profile’s centre.

Parameters: grid – The (y, x) coordinates in the original reference frame of the grid.

transformed_from_reference_frame_grid_from(grid)[source]#

Transform a grid of (y,x) coordinates from the reference frame of the profile to the original observer reference frame.

This performs a translation from the profile’s centre.

Parameters: grid – The (y, x) coordinates in the reference frame of the profile.