get_resid_contour¶

sherpa.ui.get_resid_contour(id=None)¶

Return the data used by contour_resid.

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:	resid_data – The `y` attribute contains the residual values and the `x0` and `x1` arrays the corresponsing coordinate values, as one-dimensional arrays.
Return type:	a sherpa.plot.ResidContour instance
Raises:	`sherpa.utils.err.DataErr` – If the data set is not 2D. `sherpa.utils.err.IdentifierErr` – If the data set does not exist or a source expression has not been set.

See also

get_ratio_contour(): Return the data used by contour_ratio.
get_resid_image(): Return the data used by image_resid.
contour_resid(): Contour the residuals of the fit.
image_resid(): Display the residuals (data - model) for a data set in the image viewer.

Examples

Return the residual data for the default data set:

>>> rinfo = get_resid_contour()