get_ratio_contour

sherpa.astro.ui.get_ratio_contour(id=None)

Return the data used by contour_ratio.

Parameters

id (int or str, optional) – The data set. If not given then the default identifier is used, as returned by get_default_id.

Returns

ratio_data – The y attribute contains the ratio values and the x0 and x1 arrays the corresponsing coordinate values, as one-dimensional arrays.

Return type

a sherpa.plot.RatioContour instance

Raises

See also

get_ratio_image()

Return the data used by image_ratio.

get_resid_contour()

Return the data used by contour_resid.

contour_ratio()

Contour the ratio of data to model.

image_ratio()

Display the ratio (data/model) for a data set in the image viewer.

Examples

Return the ratio data for the default data set:

>>> rinfo = get_ratio_contour()