get_ratio_contour

sherpa.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()