RegionsSelector

class gwcs.selector.RegionsSelector(inputs, outputs, selector, label_mapper, undefined_transform_value=nan, name=None, **kwargs)

Bases: astropy.modeling.Model

This model defines discontinuous transforms. It maps inputs to their corresponding transforms. It uses an instance of _LabelMapper as a proxy to map inputs to the correct region.

Parameters:

inputs : list of str

Names of the inputs.

outputs : list of str

Names of the outputs.

selector : dict

Mapping of region labels to transforms. Labels can be of type int or str, transforms are of type Model.

label_mapper : a subclass of _LabelMapper

A model which maps locations to region labels.

undefined_transform_value : float, np.nan (default)

Value to be returned if there’s no transform defined for the inputs.

name : str

The name of this transform.

Attributes Summary

fittableinputsThe name(s) of the input variable(s) on which a model is evaluated.linearoutputsThe name(s) of the output(s) of the model.selectorstandard_broadcastingundefined_transform_value

Methods Summary

evaluate(*args)

Parameters:

set_input(rid)Sets one of the inputs and returns a transform associated with it.

Attributes Documentation

fittable = False

inputs

The name(s) of the input variable(s) on which a model is evaluated.

linear = False

outputs

The name(s) of the output(s) of the model.

selector

standard_broadcasting = False

undefined_transform_value

Methods Documentation

evaluate(*args)

Parameters:

args : float or ndarray

Input pixel coordinate, one input for each dimension.

set_input(rid)

Sets one of the inputs and returns a transform associated with it.