get_kernel_image¶
-
sherpa.astro.ui.
get_kernel_image
(id=None)¶ Return the data used by image_kernel.
- Parameters
id (int or str, optional) – The data set. If not given then the default identifier is used, as returned by get_default_id.
- Returns
psf_data
- Return type
a sherpa.image.PSFKernelImage instance
- Raises
sherpa.utils.err.IdentifierErr – If a PSF model has not been created for the data set.
See also
get_psf_image
Return the data used by image_psf.
image_kernel
Display the 2D kernel for a data set in the image viewer.
image_psf
Display the 2D PSF model for a data set in the image viewer.
Examples
Return the image data for the kernel for the default data set:
>>> lplot = get_kernel_image() >>> iplot.y.shape (51, 51)