spatstat.geom (version 2.1-0)

lengths_psp: Lengths of Line Segments

Description

Computes the length of each line segment in a line segment pattern.

Usage

lengths_psp(x, squared=FALSE)

Arguments

x

A line segment pattern (object of class "psp").

squared

Logical value indicating whether to return the squared lengths (squared=TRUE) or the lengths themselves (squared=FALSE, the default).

Value

Numeric vector.

Change of name

The name of this function has changed from lengths.psp to lengths_psp, because the old name lengths.psp could be misinterpreted as a method for lengths.

The older function name lengths.psp is retained temporarily, for consistency with older code and documentation.

In future versions of spatstat, the function name lengths.psp will be removed. The newer function name lengths_psp should be used.

Details

The length of each line segment is computed and the lengths are returned as a numeric vector.

Using squared lengths may be more efficient for some purposes, for example, to find the length of the shortest segment, sqrt(min(lengths.psp(x, squared=TRUE))) is faster than min(lengths.psp(x)).

See Also

marks.psp, summary.psp, midpoints.psp, angles.psp, endpoints.psp, extrapolate.psp.

Examples

# NOT RUN {
  a <- psp(runif(10), runif(10), runif(10), runif(10), window=owin())
  b <- lengths_psp(a)   
# }