Last modified: December 2023

URL: https://cxc.cfa.harvard.edu/sherpa/ahelp/get_data.html
AHELP for CIAO 4.16 Sherpa

get_data

Context: data

Synopsis

Return the data set by identifier.

Syntax

get_data(id=None)

id - int or str, optional

Description

The object returned by the call can be used to query and change properties of the data set.


Examples

Example 1

>>> d = get_data()

Example 2

>>> dimg = get_data('img')

Example 3

>>> load_arrays('tst', [10, 20, 30], [5.4, 2.3, 9.8])
>>> print(get_data('tst'))
name      =
x         = Int64[3]
y         = Float64[3]
staterror = None
syserror  = None

PARAMETERS

The parameter for this function is:

Parameter Definition
id The data set. If not given then the default identifier is used, as returned by `get_default_id` .

Return value

The return value from this function is:

instance -- The data instance.


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
copy_data, dataspace1d, dataspace2d, datastack, delete_data, fake, 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_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, group, group_adapt, group_adapt_snr, group_bins, group_counts, group_snr, group_width, load_ascii, load_data, load_grouping, load_quality, set_data, set_quality, ungroup, unpack_ascii, unpack_data
filtering
get_filter, load_filter, set_filter
fitting
calc_stat_info, get_stat_info
info
get_default_id, list_data_ids, list_response_ids, list_stats
methods
get_draws, get_iter_method_name, get_iter_method_opt, get_method, get_method_name, get_method_opt
modeling
clean, 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_data, set_xlinear, set_xlog, set_ylinear, set_ylog
psfs
get_psf, get_psf_contour, get_psf_image, get_psf_plot
saving
save_error, save_filter, save_grouping, save_quality, save_staterror, save_syserror
statistics
get_chisqr_plot, get_delchi_plot, get_prior, get_sampler, get_stat, get_stat_name
utilities
calc_data_sum, calc_data_sum2d, calc_ftest, calc_kcorr, calc_mlr, calc_model_sum2d, calc_source_sum2d, get_analysis, get_rate
visualization
contour, contour_data, contour_ratio, histogram1d, histogram2d, image_data, image_getregion, rebin