print.tileInfo {deldir}R Documentation

Print a summary of tile information.

Description

Print a reasonably readable summary of an object of class tileInfo as produced by the tileInfo() function.

Usage

## S3 method for class 'tileInfo'
print(x, digits = 4, ...)

Arguments

x

An object of class tileInfo as produced by the tileInfo() function.

digits

The (maximum) number of decimal digits to which the output is to be printed.

...

Not used. Present for compatibility with the generic print() function.

Details

The list produced by tileInfo() is a bit messy and hard to comprehend, especially if there is a large number of tiles. This print method produces a screen display which is somewhat more perspicuous.

There are four components to the display:

This screen display is for “looking at” only. In order to do further calculations on the output of tileInfo it is necessary to delve into the bowels of x and extract the relevant bits.

In order to get a decent looking display you may (if there are tiles with a large number of edges) need to widen the window in which you are displaying the output and increase the value of the width option. E.g. use options(width=120).

Value

None.

Author(s)

Rolf Turner r.turner@auckland.ac.nz

See Also

tileInfo()

Examples

set.seed(179)
x    <- runif(100)
y    <- runif(100)
dxy  <- deldir(x,y,rw=c(0,1,0,1))
ixy1 <- tileInfo(dxy)
print(ixy1)
ixy2 <- tileInfo(dxy,bndry=TRUE)
print(ixy2)
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))
    ixy3 <- tileInfo(dxy,clipp=CP)
    options(width=120) # And enlarge the console window.
    print(ixy3) # 33 tiles are retained.
    print(ixy3$perimeters$perComps) # The tiles for points 9 and 94 have
                                    # been split into two components.
}

[Package deldir version 1.0-6 Index]