plot.fv
From spatstat v1.4-5
by Adrian Baddeley
Plot Function Valuesn
Plot method for the class "fv"
.
- Keywords
- spatial
Usage
plot.fv(x, fmla, subset=NULL, lty=NULL, col=NULL, xlim, ylim, xlab, ylab, ...)
Arguments
- 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
.
Details
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.
Value
- none. Side effect is a plot.
See Also
Examples
require(spatstat)
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
Community examples
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