Last modified: December 2022

URL: https://cxc.cfa.harvard.edu/sherpa/ahelp/get_stat.html
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AHELP for CIAO 4.15 Sherpa

get_stat

Context: statistics

Synopsis

Return the fit statisic.

Syntax

get_stat(name=None)

name - str, optional

Examples

Example 1

Return the currently-selected statistic, display its name, and read the help documentation for it:

>>> stat = get_stat()
>>> stat.name
'chi2gehrels'
>>> help(stat)

Example 2

Read the help for the "wstat" statistic:

>>> help(get_stat('wstat'))

PARAMETERS

The parameter for this function is:

Parameter Definition
name If not given, the current fit statistic is returned, otherwise it should be one of the names returned by the `list_stats` function.

Return value

The return value from this function is:

stat -- An object representing the fit statistic.


Bugs

See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.

See Also

confidence
get_conf, get_conf_results, get_covar, get_covar_opt, get_covar_results, get_covariance_results, get_int_proj, get_int_unc, get_proj, get_proj_opt, get_proj_results, get_projection_results, get_reg_proj, get_reg_unc
contrib
get_chart_spectrum, get_marx_spectrum
data
get_areascal, get_arf, get_arf_plot, get_axes, get_backscal, get_bkg, get_bkg_arf, get_bkg_chisqr_plot, get_bkg_delchi_plot, get_bkg_fit_plot, get_bkg_model, get_bkg_model_plot, get_bkg_plot, get_bkg_ratio_plot, get_bkg_resid_plot, get_bkg_rmf, get_bkg_scale, get_bkg_source, get_bkg_source_plot, get_coord, get_counts, get_data, get_data_contour, get_data_contour_prefs, get_data_image, get_data_plot, get_data_plot_prefs, get_dep, get_dims, get_error, get_exposure, get_grouping, get_indep, get_quality, get_rmf, get_specresp, get_staterror, get_syserror
filtering
get_filter
fitting
calc_stat_info, fit, get_stat_info, simulfit
info
get_default_id, list_stats
methods
get_draws, get_iter_method_name, get_iter_method_opt, get_method, get_method_name, get_method_opt, list_iter_methods, set_iter_method, set_iter_method_opt
modeling
get_model, get_model_component, get_model_component_image, get_model_component_plot, get_model_plot, get_num_par, get_num_par_frozen, get_num_par_thawed, get_order_plot, get_par, get_pileup_model, get_response, get_source, get_source_component_image, get_source_component_plot, get_source_contour, get_source_image, get_source_plot, image_source
plotting
get_split_plot, plot_fit, plot_fit_delchi, plot_fit_resid
psfs
get_psf, get_psf_contour, get_psf_image, get_psf_plot
statistics
get_chisqr_plot, get_delchi_plot, get_prior, get_sampler, get_stat_name
utilities
calc_chisqr, calc_stat, get_analysis, get_rate
visualization
contour_resid, image_fit, image_getregion