autolens.PointDataset

class PointDataset

Bases: object

A collection of the data component that can be used for point-source model-fitting, for example fitting the observed positions of a a strongly lensed quasar or supernovae or in strong lens cluster modeling, where there may be many tens or hundreds of individual source galaxies each of which are modeled as a point source.

The name of the dataset is required for point-source model-fitting, as it pairs a point-source dataset with its corresponding point-source in the model-fit. For example, if a dataset has the name source_1, it will be paired with the Point model-component which has the name source_1. If a dataset component is not successfully paired with a model-component, an error is raised.

Parameters:

• name (str) – The name of the point source dataset which is paired to a Point in the Model.

• positions (Union[Grid2DIrregular, List[List], List[Tuple]]) – The image-plane (y,x) positions of the point-source.

• positions_noise_map (Union[float, ArrayIrregular, List[float]]) – The noise-value of every (y,x) position, which is typically the pixel-scale of the data.

• fluxes (Union[ArrayIrregular, List[float], None]) – The image-plane flux of each observed point-source of light.

• fluxes_noise_map (Union[float, ArrayIrregular, List[float], None]) – The noise-value of every observed flux.

Methods

extent_from

Attributes

info	A dictionary representation of this instance.

property info: str

A dictionary representation of this instance.

Arrays are represented as lists or lists of lists.