RELEASE NOTES 

		spatstat 1.14-6

		07 november 2008
	
OVERVIEW
	Additional functionality for line segment patterns.

DEPENDENCE
	spatstat now 'Suggests' the package 'maptools'.

NEW FUNCTIONS
	
	superimposePSP
		Combines any number of line segment patterns

	nearestsegment
		Given a point pattern X and a line segment pattern Y,
		nearestsegment(X,Y) finds the line segment in Y nearest to
		each point of X.

	project2segment
		Given a point pattern X and a line segment pattern Y,
		project2segment(X,Y) projects the points of X to the
		closest locations lying along segments of Y.

	is.psp
		Determines whether a dataset has class "psp"

	marks.psp
	marks<-.psp
		Extract or replace the marks in a line segment pattern

	as.data.frame.psp
		Converts a line segment pattern to a data.frame

IMPROVEMENTS/ENHANCEMENTS

	as.psp
		Now has argument 'check=TRUE' which determines
		whether to check that the line segments are contained inside
		the window.

	spatstat.options
		New option 'checkpolygons=TRUE' controls whether
		owin() will check the geometrical validity of
		polygonal windows.

	owin
		The argument 'check' now defaults to 
		spatstat.options("checkpolygons")

	superimpose
		This function now has an argument 'check'
		determining whether to check the geometrical validity
		of the resulting point pattern.

	unmark
		This function is now generic,
		with methods for the classes ppp, splitppp and psp.

BUGS

	[1] plot.owin
		The arguments 'main' and 'box' were ignored when type="n".
		Fixed.

	[2] rpoisline
		Crashed sometimes when the window was not convex.
		Fixed.