plot.msr
Plot a Signed or Vector-Valued Measure
Plot a signed measure or vector-valued measure.
Usage
# S3 method for msr
plot(x, …,
add = FALSE,
how = c("image", "contour", "imagecontour"),
main = NULL,
do.plot = TRUE,
multiplot = TRUE,
massthresh = 0,
equal.markscale = FALSE,
equal.ribbon = FALSE)
Arguments
- x
The signed or vector measure to be plotted. An object of class
"msr"
(seemsr
).- …
Extra arguments passed to
Smooth.ppp
to control the interpolation of the continuous density component ofx
, or passed toplot.im
orplot.ppp
to control the appearance of the plot.- add
Logical flag; if
TRUE
, the graphics are added to the existing plot. IfFALSE
(the default) a new plot is initialised.- how
String indicating how to display the continuous density component.
- main
String. Main title for the plot.
- do.plot
Logical value determining whether to actually perform the plotting.
- multiplot
Logical value indicating whether it is permissible to display a plot with multiple panels (representing different components of a vector-valued measure, or different types of points in a multitype measure.)
- massthresh
Threshold for plotting atoms. A single numeric value or
NULL
. Ifmassthresh=0
(the default) then only atoms with nonzero mass will be plotted. Ifmassthresh > 0
then only atoms whose absolute mass exceedsmassthresh
will be plotted. Ifmassthresh=NULL
, then all atoms of the measure will be plotted.- equal.markscale
Logical value indicating whether different panels should use the same symbol map (to represent the masses of atoms of the measure).
- equal.ribbon
Logical value indicating whether different panels should use the same colour map (to represent the density values in the diffuse component of the measure).
Details
This is the plot
method for the class "msr"
.
The continuous density component of x
is interpolated
from the existing data by Smooth.ppp
,
and then displayed as a colour image by plot.im
.
The discrete atomic component of x
is then superimposed on this
image by plotting the atoms as circles (for positive mass)
or squares (for negative mass) by plot.ppp
.
By default, atoms with zero mass are not plotted at all.
To smooth both the discrete and continuous components,
use Smooth.msr
.
Use the argument clipwin
to restrict the plot to a subset
of the full data.
To remove atoms with tiny masses, use the argument massthresh
.
Value
(Invisible) colour map (object of class "colourmap"
) for the
colour image.
See Also
Examples
# NOT RUN {
X <- rpoispp(function(x,y) { exp(3+3*x) })
fit <- ppm(X, ~x+y)
rp <- residuals(fit, type="pearson")
rs <- residuals(fit, type="score")
plot(rp)
plot(rs)
plot(rs, how="contour")
# }