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Last modified: December 2013

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

show_conf

Context: info

Synopsis

Display the confidence information

Syntax

show_conf([outfile=None, clobber=False] )

Description

The show_conf command displays the results of the last run of the confidence command (see "ahelp conf"), which may be saved to a file via the 'outfile' argument. The output consists of the best-fit model parameter values and associated confidence limits calculated for one or more data sets, using the confidence parameter estimation method and the chosen fit optimization method and statistic.

  • outfile - name of the file in which to store the information
  • clobber - a Boolean switch which indicates whether or not the 'outfile' should be overwritten, if the file already exists; default=False

The command output looks like:

sherpa> show_conf()

Confidence:Dataset               = 1, 2
Confidence Method     = confidence
Fitting Method        = levmar
Statistic             = chi2gehrels
confidence 1-sigma (68.2689%) bounds:
   Param            Best-Fit  Lower Bound  Upper Bound
   -----            --------  -----------  -----------
   p1.gamma          2.15852   -0.0827856    0.0834106
   p1.ampl        0.00022484 -1.48256e-05  1.48256e-05

The behavior of the screen output is determined by the user's $PAGER environment variable setting, which is usually a variant of "more." To disable paging within show_all() - i.e. print the entire contents, even if it scrolls offscreen - change this setting to "cat" before starting Sherpa:

unix% setenv PAGER cat

unix% sherpa

Example 1

sherpa> show_conf()

Print to the screen the model parameter confidence values resulting from the last run of the confidence command (which may have been run for one or multiple data sets).

Example 2

sherpa> show_conf("sherpa.conf", True)

Write the model parameter confidence values to the file "sherpa.conf", clobbering any existing file with the same name.

Bugs

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

See Also

filtering
show_filter
info
list_bkg_ids, list_functions, show_all, show_bkg_model, show_bkg_source, show_covar, show_data, show_fit, show_method, show_model, show_proj, show_source, show_stat

Last modified: December 2013
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