Defines an expression or file to be used to specify the
statistical errors for source data.
sherpa> [B]STATERRORS [<dataset range> | ALLSETS] = <errorExpr>
STATERRORS is used for specifying statistical errors in source
datasets, while BSTATERRORS is used for specifying statistical errors
in background datasets.
<dataset range> = # (or more generally #:#,#:#, etc.) such that #
specifies a dataset number and #:# represents an inclusive range of
datasets; one may specify multiple inclusive ranges by separating them
with commas. The default dataset is dataset 1.
The error expression, <errorExpr>, may be composed of one or
more (algebraically-combined) of the following elements:
| DATA | An input dataset |
| numericals | Numerical values |
| operators | + - * / ( ) |
A few things to note:
-
Statistical error expressions cannot be defined without first reading in
a source dataset.
-
Statistical errors are added in quadrature with systematic errors
(if specified) to produce an overall error estimate in each data bin.
-
Currently, statistical errors cannot be
specified in an input file.
For additional information, see the related command ERRORS.
Define an expression to be used for the statistical errors.
sherpa> DATA data.dat
sherpa> STATERRORS = 5
- sherpa
-
berrors,
bsyserrors,
compute_errors,
compute_statistic,
covariance,
errors,
ftest,
get_paramest,
get_paramestint,
get_paramestlim,
get_paramestreg,
goodness,
interval-projection,
interval-uncertainty,
list_paramest,
mlr,
projection,
region-projection,
region-uncertainty,
restore_paramest,
run_paramest,
run_paramestint,
run_paramestlim,
run_paramestreg,
set_errors,
set_syserrors,
syserrors,
uncertainty
|
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