copy_data

sherpa.astro.ui.copy_data(fromid, toid)

Copy a data set to a new identifier.

This is a “deep” copy, so that once it has been made, changes to one of the data sets will not be made to the other data set.

Parameters:
  • fromid (int or str) – The input data set.
  • toid (int or str) – The output data set.
Raises:

sherpa.utils.err.IdentifierErr – If there is no data set with a fromid identifier.

Examples

>>> copy_data(1, 2)

>>> copy_data(2, "orig")