get_resid_contour
- sherpa.ui.get_resid_contour(id=None, recalc=True)
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
.recalc (bool, optional) – If
False
then the results from the last call tocontour_resid
(orget_resid_contour
) are returned, otherwise the data is re-generated.
- Returns
resid_data – The
y
attribute contains the residual values and thex0
andx1
arrays contain the corresponding 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()