get_data
- sherpa.astro.ui.get_data(id: IdType | None = None) Data
Return the data set by identifier.
The object returned by the call can be used to query and change properties of the data set.
- Parameters:
id (int, str, or None, optional) – The data set. If not given then the default identifier is used, as returned by
get_default_id
.- Returns:
instance – The data instance.
- Return type:
- Raises:
sherpa.utils.err.IdentifierErr – No data has been loaded for this data set.
See also
copy_data
Copy a data set to a new identifier.
delete_data
Delete a data set by identifier.
load_data
Create a data set from a file.
set_data
Set a data set.
Examples
>>> d = get_data()
>>> dimg = get_data('img')
>>> load_arrays('tst', [10, 20, 30], [5.4, 2.3, 9.8]) >>> print(get_data('tst')) name = x = Int64[3] y = Float64[3] staterror = None syserror = None