- sherpa.astro.ui.save_filter(id, filename=None, bkg_id=None, ascii=True, clobber=False)
Save the filter array to a file.
id (int or str, optional) – The identifier for the data set to use. If not given then the default identifier is used, as returned by
filename (str) – The name of the file to write the array to. The format is determined by the
bkg_id (int or str, optional) – Set if the background should be written out rather than the source.
ascii (bool, optional) – If
Falsethen the data is written as a FITS format binary table. The default is
True. The exact format of the output file depends on the I/O library in use (Crates or AstroPy).
clobber (bool, optional) – If
None, then this flag controls whether an existing file can be overwritten (
True) or if it raises an exception (
False, the default setting).
sherpa.utils.err.DataErr – If the data set has not been filtered.
sherpa.utils.err.IOErr – If
filenamealready exists and
Load the filter array from a file and add to a data set.
Save the data to a file.
The function does not follow the normal Python standards for parameter use, since it is designed for easy interactive use. When called with a single un-named argument, it is taken to be the
filenameparameter. If given two un-named arguments, then they are interpreted as the
filenameparameters, respectively. The remaining parameters are expected to be given as named arguments.
The output file contains the columns
Write the filter from the default data set as an ASCII file:
Write the filter for data set ‘src’ to a FITS format file:
>>> save_filter('src', 'filter.fits', ascii=False)