Last modified: December 2020

Jump to: Description · Examples · PARAMETERS · Notes · Bugs · See Also

AHELP for CIAO 4.13 Sherpa v1


Context: filtering


Include data from the fit for a data set.


notice_id(ids, lo=None, hi=None, **kwargs)

ids - int or str, or array of int or str
lo - number or str, optional
hi - number, optional
bkg_id - int or str, optional


Select one or more ranges of data to include by filtering on the independent axis value. The filter is applied to the given data set, or data sets.


Example 1

Include all data points with an X value (the independent axis) between 12 and 18 for data set 1:

>>> notice_id(1, 12, 18)

Example 2

Include the range 0.5 to 7, for data sets 1, 2, and 3:

>>> notice_id([1,2,3], 0.5, 7)

Example 3

Apply the filter 0.5 to 2 and 2.2 to 7 to the data sets "core" and "jet":

>>> notice_id(["core","jet"], "0.5:2, 2.2:7")


The parameters for this function are:

Parameter Definition
ids The data set, or sets, to use.
lo The lower bound of the filter (when a number) or a string expression listing ranges in the form a:b , with multiple ranges allowed, where the ranges are separated by a , . The term :b means include everything up to, and including b , and a: means inlude everything that is higher than, or equal to, a .
hi The upper bound of the filter when lo is not a string.
bkg_id The filter will be applied to the associated background component of the data set if bkg_id is set. Only PHA data sets support this option; if not given, then the filter is applied to all background components as well as the source data.


The order of `ignore` and `notice` calls is important.

The units used depend on the analysis setting of the data set, if appropriate.

To filter a 2D data set by a shape use `ignore2d` .


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

See Also

group, group_adapt, group_adapt_snr, group_bins, group_counts, group_snr, group_width
get_filter, ignore, ignore2d, ignore2d_id, ignore_bad, ignore_id, notice, notice2d, notice2d_id, show_filter