spatial (version 7.3-17)

ppinit: Read a Point Process Object from a File

Description

Read a file in standard format and create a point process object.

Usage

ppinit(file)

Value

class "pp" object with components x, y,

xl, xu, yl, yu

Arguments

file

string giving file name

Side Effects

Calls ppregion to set the domain.

Details

The file should contain

the number of points
a header (ignored)
xl xu yl yu scale
x y (repeated n times)

References

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.

See Also

ppregion

Examples

towns <- ppinit("towns.dat")
par(pty="s")
plot(Kfn(towns, 10), type="b", xlab="distance", ylab="L(t)")