plot. Plots (sequentially)
the tiles associated with each point in the set being tessellated. "plot"(x, verbose = FALSE, close = FALSE, pch = 1, fillcol = getCol(x,warn=warn),col.pts = NULL, border=NULL, showpoints = TRUE, add = FALSE, asp = 1, clipp = NULL, xlab = "x", ylab = "y", main = "", warn = FALSE, ...)tile.list().TRUE the tiles are
plotted one at a time (with a ``Go?'' prompt after each)
so that the process can be watched.TRUE the outer edges of
of the tiles (i.e. the edges which are contained in the enclosing
rectangle) are drawn. Otherwise tiles on the periphery of the
tessellation are left ``open''.showpoints is FALSE.col2rgb().
The $i$-th entry indicates with which colour to fill
the $i$-th tile. Note that an NA entry indicates
the use of no colour at all. This argument will be replicated
to have length equal to the number of tiles.
fillcol whose
entries can be interpreted as colours by col2rgb().
The $i$-th entry indicates with which colour to plot the
$i$-th point. This argument will be replicated to have length
equal to the number of tiles. Ignored if showpoints is
FALSE.
fillcol are black, in which
case it defaults to white. If length(border) > 1 then
an error is given.
TRUE the points of
the pattern which was tesselated are plotted.NA. Set this argument equal to NA to allow the data
to determine the aspect ratio and hence to make the plot occupy the
complete plotting region in both x and y directions.
This is inadvisable; see the Warnings. If this argument is provided then the plot of the tessellation
is “clipped” to the polygon specified by clipp.
x-axis (used only if add is FALSE).y-axis (used only if add is FALSE).add is FALSE).getCol().
Should a warning be issued if the z components of the entries
of x cannot all be interpreted as colours. See Details.
plot function.deldir, i.e. 1.1-0. The argument clipwin
has been re-named clipp (“p” for “polygon”).
Clipping is now effected via the new package polyclip.
The spatstat package is no longer used. The argument
use.gpclib has been eliminated, since gpclib (which
used to be called upon by spatstat has been superceded by
polyclip which has an unrestrictive license. deldir package, the
argument fillcol to this function replaces the old
argument polycol, but behaves somewhat differently. showrect which was present in versions
of this function prior to release 0.1-1 has been eliminated.
It was redundant. col.pts argument might
behave somewhat differently from how it behaved in the past. border, clipp, and warn
are new as of release 0.1-1. asp but rather to leave asp
equal to its default value of 1. Any other value distorts
the tesselation and destroys the perpendicular appearance of lines
which are indeed perpendicular. (And conversely can cause lines
which are not perpendicular to appear as if they are.)
clipp is not NULL and showpoints
is TRUE then it is possible that some of the points
“shown” will not fall inside any of the plotted tiles.
(This will happen if the parts of the tiles in which they fall
have been “clipped” out.) If a tile is clipped out
completely then the point which determines that tile is
not plotted irrespective of the value of showpoints. clipp were added at
the request of Chris Triggs. asp was added at the request of Zubin
Dowlaty.
deldir(), tile.list(),
triang.list(), plot.triang.list() set.seed(42)
x <- runif(20)
y <- runif(20)
z <- deldir(x,y,rw=c(0,1,0,1))
w <- tile.list(z)
plot(w)
ccc <- heat.colors(20) # Or topo.colors(20), or terrain.colors(20)
# or cm.colors(20), or rainbow(20).
plot(w,fillcol=ccc,close=TRUE)
if(require(polyclip)) {
CP <- list(x=c(0.49,0.35,0.15,0.20,0.35,0.42,
0.43,0.62,0.46,0.63,0.82,0.79),
y=c(0.78,0.86,0.79,0.54,0.58,0.70,
0.51,0.46,0.31,0.20,0.37,0.54))
plot(w,clipp=CP,showpoints=FALSE,fillcol=topo.colors(20))
}
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