Last modified: December 2020

URL: https://cxc.cfa.harvard.edu/sherpa/ahelp/set_full_model.html
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AHELP for CIAO 4.13 Sherpa v1

set_full_model

Context: modeling

Synopsis

Define the convolved model expression for a data set.

Syntax

set_full_model(id, model=None)

id - int or str, optional
model - str or sherpa.models.Model object

Description

The model expression created by `set_model` can be modified by "instrumental effects", such as a PSF set by `set_psf` . The `set_full_model` function is for when this is not sufficient, and full control is needed. An example of when this would be if different PSF models should be applied to different source components.


Example

Apply different PSFs to different components, as well as an unconvolved component:

>>> load_psf("psf1", "psf1.dat")
>>> load_psf("psf2", "psf2.dat")
>>> smodel = psf1(gauss2d.src1) + psf2(beta2d.src2) + const2d.bgnd
>>> set_full_model("src", smodel)

PARAMETERS

The parameters for this function are:

Parameter Definition
id The data set containing the source expression. If not given then the default identifier is used, as returned by `get_default_id` .
model This defines the model used to fit the data. It can be a Python expression or a string version of it.

Notes

The function does not follow the normal Python standards for parameter use, since it is designed for easy interactive use. When called with a single un-named argument, it is taken to be the `model` parameter. If given two un-named arguments, then they are interpreted as the `id` and `model` parameters, respectively.

Some functions - such as `plot_source` - may not work for model expressions created by `set_full_model` .


Bugs

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

See Also

confidence
set_conf_opt, set_covar_opt, set_proj_opt
data
get_bkg_chisqr_plot, get_bkg_delchi_plot, get_bkg_fit_plot, get_bkg_model_plot, get_bkg_plot, get_bkg_ratio_plot, get_bkg_resid_plot, get_bkg_source_plot, set_areascal, set_arf, set_backscal, set_bkg, set_coord, set_counts, set_data, set_dep, set_exposure, set_grouping, set_quality, set_rmf, set_staterror, set_syserror
filtering
set_filter
fitting
fit
info
list_model_ids, show_bkg_model, show_bkg_source
methods
set_iter_method, set_iter_method_opt, set_method, set_method_opt
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_num_par_frozen, get_num_par_thawed, get_order_plot, get_par, get_pileup_model, get_source, get_source_component_image, get_source_component_plot, get_source_contour, get_source_image, get_source_plot, get_xsabund, get_xscosmo, get_xsxsect, get_xsxset, image_model, image_model_component, image_source, image_source_component, integrate, link, load_table_model, load_template_interpolator, load_template_model, load_user_model, normal_sample, reset, save_model, save_source, set_bkg_model, set_bkg_source, set_model, set_model_autoassign_func, set_par, set_pileup_model, set_source, set_xsabund, set_xscosmo, set_xsxsect, set_xsxset, t_sample, uniform_sample
plotting
get_cdf_plot, get_pdf_plot, 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, set_psf
saving
save_delchi, save_resid
statistics
set_prior, set_sampler, set_sampler_opt, set_stat
utilities
calc_chisqr, calc_energy_flux, calc_model_sum, calc_photon_flux, calc_source_sum, calc_stat, eqwidth, set_analysis, set_default_id
visualization
contour_model, contour_ratio, contour_resid, image_setregion