RELEASE NOTES 

		spatstat 1.8-2

	 	5 December 2005


OVERVIEW

	This release introduces some basic support for 
	line segment patterns, and an enhancement of the 
	pixel image class.

NEW FUNCTIONS

	There is a new class "psp" of line segment patterns.
	See help(psp.object).

	psp() 
		creates objects of class "psp"

	as.psp() 
		converts data from other formats 
		into an object of class "psp".

	plot.psp() 
		plots a line segment pattern

	print.psp() 
		prints basic information about a line segment pattern

	summary.psp()
		prints a more detailed summary of a line segment pattern

	midpoints.psp()
	lengths.psp()
	angles.psp()
		compute the midpoint, length or orientation angle
		of each segment in a line segment pattern

	subset.psp
		extract a subset of a line segment pattern
		(includes clipping line segments to a rectangular boundary)

	distmap.psp
		calculate distance map of a line segment pattern

	shift.psp
	rotate.psp
	affine.psp
		apply a vector shift, a rotation, or both
		to a line segment pattern.
	

IMPROVEMENTS/ENHANCEMENTS

	class "im"
		Pixel images (objects of class "im") can now be 
		factor-valued. 
		Updated functions include im, as.im, print.im,
		summary.im, eval.im and plot.im.
	
	eval.im
		Is now more flexible. The result of evaluation
		does not have to be a matrix, and may be a factor.

	plot.im
		Now has different behaviour for real-valued, 
		integer-valued and factor-valued images.
		
	demo(spatstat)
		Includes examples of the new functionality for line segments 

	Various help files improved.

BUGS

	No bugs found (this week!)