filled.contour.poly: Level (Contour) Plots with Polygonal Boundary

In spatialkernel: Nonparametric Estimation of Spatial Segregation in a Multivariate Point Process

Description

This is a revised version of the base R function filled.contour. It additionally plots a polygonal boundary.

Usage

filled.contour.poly(x = seq(min(poly[,1]), max(poly[,1]), 
  len = nrow(z)),
y = seq(min(poly[,2]), max(poly[,2]), len = ncol(z)),
z, poly,
xlim = range(x, finite=TRUE),
ylim = range(y, finite=TRUE),
zlim = range(z, finite=TRUE),
levels = pretty(zlim, nlevels), nlevels = 10,
color.palette = risk.colors,
col = color.palette(length(levels) - 1),
llevels = levels, labels = NULL, labcex = 0.6,
drawlabel = TRUE, method = "flattest",
vfont = c("sans serif", "plain"),
lcol = par("fg"), lty = par("lty"), lwd = par("lwd"),   
plot.title, plot.axes, key.title, key.axes,
asp = NA, xaxs = "i", yaxs = "i", las = 1, axes = TRUE,
...)

Arguments

x,y	locations of grid lines at which the values in z are measured. These must be in ascending order. By default, equally spaced values from 0 to 1 are used. If x is a list, its components x$x and x$y are used for x and y, respectively. If the list has component z this is used for z.
z	a matrix containing the values to be plotted (NAs are allowed). Note that x can be used instead of z for convenience.
xlim	x limits for the plot.
ylim	y limits for the plot.
zlim	z limits for the plot.
poly	a matrix containing the x,y-coordinates of the vertices of the polygon boundary.
levels	a set of levels which are used to partition the range of z. Must be strictly increasing (and finite). Areas with z values between consecutive levels are painted with the same color.
nlevels	if levels is not specified, the range of z is divided into approximately this many levels.
color.palette	a color palette function used to assign colors in the plot.
col	an explicit set of colors to be used in the plot. This argument overrides any palette function specification.
llevels	numeric vector of levels at which to draw contour lines, default is the same as levels.
labels	a vector giving the labels for the contour lines. If NULL then the levels are used as labels.
labcex	cex for contour labelling.
drawlabel	logical, contour lines are labelled if TRUE.
method	character string specifying where the labels will be located. Possible values are "simple", "edge" and "flattest" (the default). See the Details section.
vfont	if a character vector of length 2 is specified, then Hershey vector fonts are used for the contour labels. The first element of the vector selects a typeface and the second element selects a fontindex (see text for more information).
lcol	color for the lines drawn.
lty	line type for the lines drawn.
lwd	line width for the lines drawn.
plot.title	statement which add title to the main plot.
plot.axes	statement which draws axes on the main plot. This overrides the default axes.
key.title	statement which adds title to the plot key.
key.axes	statement which draws axes on the plot key. This overrides the default axis.
asp	the y/x aspect ratio, see plot.window.
xaxs	the x axis style. The default is to use internal labeling.
yaxs	the y axis style. The default is to use internal labeling.
las	the style of labeling to be used. The default is to use horizontal labeling.
axes, ...	additional graphical parameters.

Note

By defining z values as NA at points outside the polygonal boundary, filled.contour.poly produces a contour plot within the polygonal boundary.

See Also

filled.contour, contour and pinpoly

spatialkernel documentation built on May 2, 2019, 4:37 p.m.