Make a list of two-dimensional spatial objects.
solist(…, check=TRUE, promote=TRUE, demote=FALSE, .NameBase)Any number of objects, each representing a two-dimensional spatial dataset.
Logical value. If TRUE, check that each of the
objects is a 2D spatial object.
Logical value. If TRUE, test whether all objects belong to
the same class, and if so, promote the list of objects
to the appropriate class of list.
Logical value determining what should happen if any of the
objects is not a 2D spatial object: if demote=FALSE (the
default), a fatal error occurs; if demote=TRUE,
a list of class "anylist" is returned.
Optional. Character string. If the … arguments have no
names, then the entries of the resulting list will be given
names that start with .NameBase.
A list, usually belonging to the class "solist".
This command creates an object of class "solist"
(spatial object list)
which represents a list of two-dimensional spatial datasets.
The datasets do not necessarily belong to the same class.
Typically the intention is that the datasets in the list
should be treated in the same way, for example, they should
be plotted side-by-side. The spatstat package
provides a plotting function, plot.solist,
and many other functions for this class.
In the spatstat package, various functions produce
an object of class "solist". For example, when
a point pattern is split into several point patterns by
split.ppp, or an image is split into several
images by split.im, the result is of
class "solist".
If check=TRUE then the code will check whether all
objects in … belong to the classes
of two-dimensional spatial objects defined in the
spatstat package. They do not have to belong to the
same class. Set check=FALSE
for efficiency, but only if you are sure that all the objects are valid.
If some of the objects in … are
not two-dimensional spatial objects,
the action taken depends on the argument demote.
If demote=TRUE, the result will belong to the more general
class "anylist" instead of "solist".
If demote=FALSE (the default), an error occurs.
If promote=TRUE then the code will check whether all
the objects … belong to the same class.
If they are all point patterns (class "ppp"),
the result will also belong to the class "ppplist".
If they are all pixel images (class "im"), the result
will also belong to the class "imlist".
Use as.solist to convert a list to a "solist".
# NOT RUN {
solist(cells, distmap(cells), quadratcount(cells))
solist(cells, japanesepines, redwood, .NameBase="Pattern")
# }
Run the code above in your browser using DataLab