image_data
- sherpa.astro.ui.image_data(id: IdType | None = None, newframe=False, tile=False) None
Display a data set in the image viewer.
The image viewer is automatically started if it is not already open.
- 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
.newframe (bool, optional) – Create a new frame for the data? If
False
, the default, then the data will be displayed in the current frame.tile (bool, optional) – Should the frames be tiles? If
False
, the default, then only a single frame is displayed.
- Raises:
sherpa.utils.err.IdentifierErr – If the data set does not exist.
See also
get_data_image
Return the data used by image_data.
image_close
Close the image viewer.
image_fit
Display the data, model, and residuals for a data set in the image viewer.
image_open
Open the image viewer.
image_source
Display the model for a data set in the image viewer.
Notes
Image visualization is optional, and provided by the DS9 application.
Examples
Display the data in default data set.
>>> image_data()
Display data set 2 in a new frame so that the data in the current frame is not destroyed. The new data will be displayed in a single frame (i.e. the only data shown by the viewer).
>>> image_data(2, newframe=True)
Display data sets ‘i1’ and ‘i2’ side by side:
>>> image_data('i1') >>> image_data('i2', newframe=True, tile=True)