Synopsis
Exclude a spatial region from all data sets.
Syntax
ignore2d(val=None)
Description
Select a spatial region to exclude in the fit. The filter is applied to all data sets.
Examples
Example 1
Exclude points that fall within the two regions:
>>> ignore2d("ellipse(200,300,40,30,-34)")
dataset 1: Field() -> Field()&!Ellipse(200,300,40,30,-34)
>>> ignore2d("box(40,100,30,40)")
dataset 1: Field()&!Ellipse(200,300,40,30,-34) -> Field()&!Ellipse(200,300,40,30,-34)&!Box(40,100,30,40)Example 2
Use a region file called 'reg.fits', by using either:
>>> set_coord("physical")
>>> ignore2d("reg.fits")
dataset 1: Field() -> Field()&!Ellipse(3144.52,4518.81,25.2979,19.1119,42.9872)or
>>> set_coord("physical")
>>> ignore2d("region(reg.fits)")
dataset 1: Field() -> Field()&!Ellipse(3144.52,4518.81,25.2979,19.1119,42.9872)Example 3
Exclude all points and hide the screen output:
>>> from sherpa.utils.logging import SherpaVerbosity
>>> with SherpaVerbosity("WARN"):
... ignore2d()
...PARAMETERS
The parameter for this function is:
| Parameter | Type information | Definition |
|---|---|---|
| val | str, optional | A region specification as a string or the name of a file containing a region filter. The coordinates system of the filter is taken from the coordinate setting of the data sets ( `set_coord` ). If none , then all points are included. |
Notes
The region syntax is described in the `notice2d` function.
Changes in CIAO
Changed in CIAO 4.15
The change in the filter is now reported for each dataset.
Bugs
See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.
See Also
- data
- group, group_adapt, group_adapt_snr, group_bins, group_counts, group_snr, group_width, set_coord
- filtering
- get_filter, ignore, ignore2d_id, ignore2d_image, ignore_bad, ignore_id, notice, notice2d, notice2d_id, notice2d_image, notice_id, show_filter