Plots a tessellation, with optional labels for the tiles, and optional filled colour in each tile.
# S3 method for tess
plot(x, …, main, add=FALSE,
show.all=!add,
border=NULL,
do.plot=TRUE,
do.labels=FALSE,
labels=tilenames(x), labelargs=list(),
do.col=FALSE,
values=marks(x),
multiplot=TRUE,
col=NULL, ribargs=list())Tessellation (object of class "tess") to be plotted.
Arguments controlling the appearance of the plot.
Heading for the plot. A character string.
Logical. Determines whether the tessellation plot is added to the existing plot.
Logical value indicating whether to plot everything
including the main title and the observation window of x.
Colour of the tile boundaries. A character string or other value specifying a single colour. Ignored for pixel tessellations.
Logical value indicating whether to actually perform the plot.
Logical value indicating whether to show a text label for each tile of the tessellation.
Character vector of labels for the tiles.
List of arguments passed to
text.default to control display of the text labels.
Logical value indicating whether tiles should be filled with
colour. Always TRUE for pixel tessellations.
A vector of numerical values (or a factor, or vector of character
strings) that will be associated with each tile of the tessellation
and which determine the colour of the tile. The default is
the marks of x. If the tessellation is not marked,
or if the argument values=NULL is given, the default is
a factor giving the tile identifier.
Logical value giving permission to display multiple plot panels.
This applies when do.col=TRUE and ncol(values) > 1.
A vector of colours for each of the values,
or a colourmap that maps these values to colours.
List of additional arguments to control the plot of the colour map,
if do.col=TRUE. See explanation in plot.im.
(Invisible) window of class "owin" specifying a bounding box
for the plot, or an object of class "colourmap" specifying the
colour map. (In the latter case, the bounding box information is
available as an attribute, and can be extracted
using as.owin.)
This is a method for the generic plot function
for the class "tess" of tessellations (see tess).
The window of the tessellation is plotted, and then the tiles of the tessellation are plotted in their correct positions in the window.
Rectangular or polygonal tiles are plotted individually
using plot.owin, while a
tessellation represented by a pixel image
is plotted using plot.im.
The arguments … control the appearance of the plot,
and are passed to segments,
plot.owin or plot.im as appropriate.
If do.col=TRUE, then the tiles of the tessellation are filled
with colours determined by the argument values.
By default, these values are the marks associated with each of the tiles.
If there is more than one column of marks or values,
then the default behaviour (if multiplot=TRUE)
is to display several plot panels, one for
each column of mark values. Then the arguments … are
passed to plot.solist to determine the arrangement of
the panels.
# NOT RUN {
Rect <- tess(xgrid=0:4,ygrid=0:4)
Diri <- dirichlet(runifpoint(7))
plot(Diri)
plot(Rect, border="blue", lwd=2, lty=2)
plot(Rect, do.col=TRUE, border="white")
plot(Rect, do.col=TRUE, values=runif(16), border="white")
B <- Rect[c(1, 2, 5, 7, 9)]
plot(B, hatch=TRUE)
plot(Diri, do.col=TRUE)
plot(Diri, do.col=TRUE, do.labels=TRUE, labelargs=list(col="white"),
ribbon=FALSE)
v <- as.im(function(x,y){factor(round(5 * (x^2 + y^2)))}, W=owin())
levels(v) <- letters[seq(length(levels(v)))]
Img <- tess(image=v)
plot(Img)
plot(Img, col=rainbow(11), ribargs=list(las=1))
a <- tile.areas(Diri)
marks(Diri) <- data.frame(area=a, random=runif(7, max=max(a)))
plot(Diri, do.col=TRUE, equal.ribbon=TRUE)
# }
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