plot.fv {spatstat} | R Documentation |
Plot method for the class "fv"
.
plot.fv(x, fmla, subset=NULL, lty=NULL, col=NULL, xlim, ylim, xlab, ylab, ...)
x |
An object of class "fv" , containing the variables to be plotted
or variables from which the plotting coordinates can be computed.
|
fmla |
an S language formula determining which variables or expressions are plotted. |
subset |
(optional) subset of rows of the data frame that will be plotted. |
lty |
(optional) numeric vector of values of the graphical parameter
lty controlling the line style of each plot.
|
col |
(optional) numeric vector of values of the graphical parameter
col controlling the colour of each plot.
|
xlim |
(optional) range of x axis |
ylim |
(optional) range of y axis |
xlab |
(optional) label for x axis |
ylab |
(optional) label for y axis |
... |
Extra arguments passed to plot.default .
|
This is the plot
method for the class "fv"
.
The use of the argument fmla
is like plot.formula
, but offers
some extra functionality.
The left and right hand sides of fmla
are evaluated in the data frame x
,
and the results are plotted against each other
(the left side on the y axis
against the right side on the x axis).
Both left and right sides may be variables in the data frame
or expressions in these variables.
Multiple curves may be specified by a single formula
of the form
cbind(y1,y2,...,yn) ~ x
, where x,y1,y2,...,yn
are
expressions involving the variables in the data frame.
Each of the variables y1,y2,...,yn
in turn will be plotted
against x
.
See the examples.
none. Side effect is a plot.
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
data(cells) K <- Kest(cells) # K is an object of class "fv" plot(K, iso ~ r) # plots iso against r plot(K, sqrt(iso/pi) ~ r) # plots sqrt(iso/r) against r plot(K, cbind(iso,theo) ~ r) # plots iso against r AND theo against r plot(K, cbind(iso,theo) ~ r, col=c(2,3)) # plots iso against r in colour 2 # and theo against r in colour 3 plot(K, iso ~ r, subset=quote(r < 0.2)) # plots iso against r for r < 10