This is a method for the generic command
contour
for the class "imlist"
.
An object of class "imlist"
represents a list of pixel images.
(The outdated class "listof"
is also handled.)
Each entry in the list x
will be displayed as a contour plot,
in an array of panels laid out on the same graphics display,
using plot.solist
. Invididual panels are plotted
by contour.im
.