plot.fasp {spatstat}R Documentation

Plot a Function Array

Description

Plots an array of summary functions, usually associated with a point pattern, stored in an object of class "fasp". A method for plot.

Usage

plot(x)
plot(x, formule=formule)
plot(x, formule=formule, subset)
plot(x, formule=formule, subset, lty, col, title, ...)

Arguments

x An object of class "fasp" representing a function array.
formule A formula or list of formulae indicating what variables are to be plotted against what variable. Each formula is either an R language formula object, or a string that can be parsed as a formula. If formule is a list, its k-th component should be applicable to the (i,j)-th plot where x$which[i,j]=k. If the formula is left as NULL, then plot.fasp attempts to use the component default.formula of x. If that component is NULL as well, it gives up.
In S-PLUS, if this argument is given, then either it must be supplied in the ``name=value'' format, or the name of the plotting function must be used explicitly. I.e. the call must use the function name plot.fasp and not plot. Otherwise the plotting function falls over. See Warnings. There is no problem in R.
subset A logical vector, or a vector of indices, or an expression or a character string, or a list of such, indicating a subset of the data to be included in each plot. If subset is a list, its k-th component should be applicable to the (i,j)-th plot where x$which[i,j]=k.
lty A vector of integers indicating line types to be used in forming the plot.
col A vector of integers indicating colours for the different lines which form the plot.
title Overall title for the plot.
... Arguments passed to plot.default to control other features of the individual plot panels.

Details

An object of class "fasp" represents an array of summary functions, usually associated with a point pattern. See fasp.object for details. Such an object might be created, for example, by alltypes or allstats.

The function plot.fasp is a method for plot. It calls plot.fv to plot the individual panels.

For information about the interpretation of the arguments formule, subset, lty and col, see plot.fv.

The argument title, if present, will determine the overall title of the plot. If it is absent, it defaults to x$title. Titles for the individual plot panels will be taken from x$titles.

Value

None.

Warnings

(Each component of) the subset argument may be a logical vector (of the same length as the vectors of data which are extracted from x), or a vector of indices, or an expression such as expression(r<=0.2), or a text string, such as "r<=0.2".

Attempting a syntax such as subset = r<=0.2 (without wrapping r<=0.2 either in quote marks or in expression()) will cause this function to fall over.

Variables referred to in any formula must exist in the data frames stored in x. What the names of these variables are will of course depend upon the nature of x.

Author(s)

Adrian Baddeley adrian@maths.uwa.edu.au http://www.maths.uwa.edu.au/~adrian/ and Rolf Turner rolf@math.unb.ca http://www.math.unb.ca/~rolf

See Also

alltypes, allstats, plot.fv, fasp.object

Examples

   ## Not run: 
   # Bramble Canes data.
   data(bramblecanes)

   X.G <- alltypes(bramblecanes,type="G",dataname="Bramblecanes",verb=TRUE)
   plot(X.G)
   plot(X.G,subset="r<=0.2")
   plot(X.G,formule=cbind(asin(sqrt(km)),
                    asin(sqrt(theo))) ~ asin(sqrt(theo)))
       plot(X.G,fo=cbind(km-theo,0)~r,"r<=0.2")

   # Swedish pines.
   data(swedishpines)
   X <- allstats(swedishpines,dataname="Swedish Pines")
   plot(X,subset=list("r<=20","r<=20","r<=20","r<=50"))

   # Simulated data.
   pp <- runifpoint(350, owin(c(0,1),c(0,1)))
   pp$marks <- factor(c(rep(1,50),rep(2,100),rep(3,200)))
   X.K <- alltypes(pp,type="K",verb=TRUE,dataname="Fake Data")
   plot(X.K,fo=cbind(border,theo)~theo,"theo<=0.75")
   ## End(Not run)

[Package spatstat version 1.6-4 Index]