get_coord

sherpa.astro.ui.get_coord(id=None)

Get the coordinate system used for image analysis.

Parameters:

id (int or str, optional) – The data set to query. If not given then the default identifier is used, as returned by get_default_id.

Returns:

coord

Return type:

{ ‘logical’, ‘physical’, ‘world’ }

Raises:

• sherpa.utils.err.ArgumentErr – If the data set does not contain image data.
• sherpa.utils.err.IdentifierErr – If the id argument is not recognized.

See also

get_default_id()

Return the default data set identifier.

set_coord()

Set the coordinate system to use for image analysis.