This function converts the object X
into an object of class "layered".
The argument X should contain some kind of spatial data
such as a point pattern, window, or pixel image.
If X is a simple object then it will be converted into
a layered object containing only one layer which is equivalent
to X.
If X can be interpreted as consisting of
multiple layers of data, then the result will be a layered
object consisting of these separate layers of data.
ifXis a list of class"listof"or"solist",
thenas.layered(X)consists of several layers,
one for each entry in the listX;
ifXis a multitype point pattern,
thenas.layered(X)consists of several layers,
each containing the sub-pattern consisting of points of one type;
ifXis a vector-valued measure,
thenas.layered(X)consists of several layers,
each containing a scalar-valued measure.