plot.tile.list {deldir} | R Documentation |
A method for plot
. Plots (sequentially)
the tiles associated with each point in the set being tessellated.
## S3 method for class 'tile.list' plot(x, verbose = FALSE, close=FALSE, pch=1, polycol=NA, showpoints=TRUE, showrect=FALSE, add=FALSE, asp=1, xlab = "x", ylab = "y", main = "", ...)
x |
A list of the tiles in a tessellation, as produced
the function |
verbose |
Logical scalar; if |
close |
Logical scalar; if |
pch |
The plotting character for plotting the points of the
pattern which was tessellated. Ignored if |
polycol |
Optional vector of integers (or |
showpoints |
Logical scalar; if |
showrect |
Logical scalar; show the enclosing rectangle |
add |
Logical scalar; should the plot of the triangles be added to an existing plot? |
asp |
The aspect ratio of the plot; integer scalar or
|
xlab |
Label for the |
ylab |
Label for the |
main |
A title for the plot (used only if |
... |
Optional arguments; not used. There for consistency
with the generic |
NULL; side effect is a plot.
The default value for verbose
was formerly TRUE
;
it is now FALSE
.
The user is strongly advised not to set the value of
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.)
The argument asp
is present “just because it can be”.
Rolf Turner r.turner@auckland.ac.nz http://www.math.unb.ca/~rolf
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 rainbox(20). plot(w,polycol=ccc,close=TRUE)