# image_data¶

sherpa.astro.ui.image_data(id=None, newframe=False, tile=False)

Display a data set in the image viewer.

The image viewer is automatically started if it is not already open.

Parameters: id (int or str, 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. sherpa.utils.err.IdentifierErr – If the data set does not exist.

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 [1].

References

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)