Controls output of parameters values and statistics to an ASCII file.
sherpa> RECORD [{ON | OFF}]
During every iteration of a fit, points in parameter space are chosen
and statistics computed. The user can access information about these
intermediate fits by issuing the command RECORD ON
and retrieving the contents of the file described below.
RECORD OFF turns off the recording. Issuing the
command RECORD alone causes Sherpa
to display the current setting.
Fit information is written to the ASCII file
search-<username>.dat, located
the $ASCDS_WORK_PATH directory; type "echo
$ASCDS_WORK_PATH" to find the location on your system.
Note that successive FIT commands cause the file contents
to be overwritten!
The fit information may also be accessed via
the Sherpa/S-Lang module function
get_record.
Write fit parameter values and statistics to an ASCII file:
sherpa> PARAMPROMPT OFF
Model parameter prompting is off
sherpa> DATA data/example1.dat
sherpa> POLYNOM1D[my]
sherpa> THAW my.c1 my.c2
sherpa> SOURCE 1 = my
sherpa> METHOD SIMPLEX
sherpa> RECORD ON
sherpa> FIT
smplx: v1.3
smplx: initial statistic value = 3.25453E+02
smplx: converged to minimum = 3.44058E-01 at iteration = 82
smplx: final statistic value = 3.44058E-01
my.c0 -0.996019
my.c1 0.672607
my.c2 0.923389
sherpa> $echo $ASCDS_WORK_PATH
/tmp
sherpa> $ls /tmp/search*
/tmp/search-<username>dat
sherpa> $more /tmp/search-<username>.dat
my.c0 my.c1 my.c2 Chi-Squared
33 0 0 325.453
33 0 0 325.453
32.34 0.01 0.01 312.682
32.34 0.01 0.01 312.682
31.9 0.00666667 0.00333333 303.974
...
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guide
- sherpa
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get_analysis,
get_arf_axes,
get_axes,
get_coord,
get_data,
get_energy_axes,
get_errors,
get_filter,
get_filter_expr,
get_fit,
get_fluxed_spectrum,
get_ftest,
get_metadata,
get_photon_axes,
get_photon_energy_axes,
get_photon_wave_axes,
get_qvalue,
get_raw_axes,
get_record,
get_source,
get_statistic,
get_stats,
get_syserrors,
get_wave_axes,
get_weights,
save,
write
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