Plots an Object of class spp

DESCRIPTION:

Plots a spatial point pattern using a scale ratio of 1 for the plot. It allows for overlaying of the object's boundary.

USAGE:

plot.spp(object, boundary=F, xlim, ylim, ..., bdy.lty=2, bdy.col=1) 

REQUIRED ARGUMENTS:

object
a spatial point pattern object. An object of class "spp".

OPTIONAL ARGUMENTS:

boundary
logical flag: should the object's boundary be added to the plot?
xlim,ylim
vectors with 2 components as in c(min,max) containing approximate minimum and maximum values to be put on the axes. These values are automatically rounded to make them "pretty" for axis labeling. The range of the data (and the boundary if boundary=T) determine their default values.
bdy.lty
line type to use when plotting the boundary.
bdy.col
color to use when plotting the boundary. Graphical parameters may also be supplied as arguments to this function (see ).

SIDE EFFECTS:

an XY-plot of the object is produced on the current graphics device. This function is a method for the generic function for class spp. It can be invoked by calling for an object x of the appropriate class, or directly by calling regardless of the class of the object.

SEE ALSO:

, .

EXAMPLES:

maples <- spp(lansing[lansing$species=="maple",]) 
hickories <- spp(lansing[lansing$species=="hickory",]) 
plot(maples,boundary=T) 
points(hickories)