Creates a grid of colored or gray-scale rectangles with colors
corresponding to the values in z.
This can be used to display three-dimensional or spatial data aka
NOTE: This man page is for the imageS4 generic function
defined in the BiocGenerics package.
See ?graphics::image for the default method
(defined in the graphics package).
Bioconductor packages can define specific methods for objects
not supported by the default method.