Chandra X-Ray Observatory
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Last modified: December 2013

URL: http://cxc.harvard.edu/sherpa/ahelp/list_model_ids.html
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AHELP for CIAO 4.9 Sherpa v1

list_model_ids

Context: info

Synopsis

List all current model IDs.

Syntax

list_model_ids()

Description

Sherpa allows users to construct arbitrarily complex models from model components (e.g., Gaussians, Lorentzians, XSPEC models, etc.). These model expressions can then be assigned to Sherpa data sets, so that the models can be fit to the data. This function lists the IDs of all current, active models in a Sherpa session, i.e., all models which have been assigned to a data set to be fit. A model ID is the same as the ID of the data set to which it has been assigned, though the user has the option to assign an alternate model ID to a given model with the set_source command. However, in this case, the list_model_ids() function will return both the user-defined model ID *and* the ID of the data set to which that model has been assigned. The list_model_ids() function accepts no input arguments.

Example

sherpa> set_source(xsphabs.abs1)
sherpa> set_source(2, xspowerlaw.p1)
sherpa> set_source(3, abs1*p1)
sherpa> set_source("src", gauss1d.g1)
sherpa> set_source(4, get_model("src"))
sherpa> list_model_ids()
[1, 2, 3, 4, 'src']

Bugs

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

See Also

data
get_bkg_plot
info
show_bkg_model, show_bkg_source
modeling
add_model, add_user_pars, clean, create_model_component, delete_bkg_model, delete_model, delete_model_component, get_model, get_model_autoassign_func, get_model_component, get_model_component_image, get_model_component_plot, get_model_plot, get_num_par, get_order_plot, get_par, get_pileup_model, get_source, get_source_component_image, get_source_component_plot, image_model, image_model_component, image_source, image_source_component, integrate, integrate1d, link, load_table_model, load_template_model, load_user_model, normal_sample, reset, save_model, save_source, set_bkg_model, set_full_model, set_model_autoassign_func, set_pileup_model, set_source, set_xsabund, set_xscosmo, set_xsxsect, set_xsxset, t_sample, uniform_sample
plotting
get_lrt_plot, get_lrt_results, get_pvalue_plot, get_pvalue_results, plot_cdf, plot_model, plot_model_component, plot_pdf, plot_pvalue, plot_scatter, plot_source, plot_source_component, plot_trace
psfs
delete_psf, load_conv
saving
save_delchi, save_resid
utilities
calc_chisqr, calc_energy_flux, calc_model_sum, calc_photon_flux, calc_source_sum, calc_stat, eqwidth
visualization
contour_model, contour_ratio, contour_resid, get_ratio, get_resid

Last modified: December 2013
Smithsonian Institute Smithsonian Institute

The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email:   cxchelp@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2017. All rights reserved.