Plot a triangulation object

plots the triangulation object "x"

# S3 method for class 'triSht'
plot(x, add = FALSE, xlim = range(x$x),
  ylim = range(x$y), do.points = TRUE, do.labels = FALSE, isometric = TRUE,
  do.circumcircles = FALSE, segment.lty = "dashed", circle.lty =
  "dotted", ...)

Arguments

x

object of class "triSht"

add

logical, if TRUE, add to a current plot.

do.points

logical, indicates if points should be plotted. (default TRUE)

do.labels

logical, indicates if points should be labelled. (default FALSE)

xlim,ylim

x/y ranges for plot

isometric

generate an isometric plot (default TRUE)

do.circumcircles

logical, indicates if circumcircles should be plotted (default FALSE)

segment.lty

line type for triangulation segments

circle.lty

line type for circumcircles

...

additional plot parameters

Value

None

Author

Albrecht Gebhardt <albrecht.gebhardt@aau.at>, Roger Bivand <roger.bivand@nhh.no>

See also

triSht, print.triSht, summary.triSht

Examples

## random points
plot(tri.mesh(rpois(100,lambda=20),rpois(100,lambda=20),duplicate="remove"))

## use a part of the quakes data set:
data(quakes)
quakes.part<-quakes[(quakes[,1]<=-10.78 & quakes[,1]>=-19.4 &
                     quakes[,2]<=182.29 & quakes[,2]>=165.77),]
quakes.tri<-tri.mesh(quakes.part$lon, quakes.part$lat, duplicate="remove")
plot(quakes.tri)

## use the whole quakes data set
## (will not work with standard memory settings, hence commented out)
## plot(tri.mesh(quakes$lon, quakes$lat, duplicate="remove"), do.points=F)