RELEASE NOTES 

		spatstat 1.11-7

		9 June 2007

		We thank John Rudge and Ross Ihaka for contributions.
	
OVERVIEW
	Various additions, improvements and bug fixes.	
	Line shading for polygons.

NEW FUNCTIONS

	clarkevans
		Computes the Clark and Evans aggregation index.
		(code contributed by John Rudge)

	discretise
		Converts the window of a point pattern
		to a binary pixel mask, ensuring that no points are lost
		(the mask contains all the points of the pattern).

	rlinegrid
		Generates a grid of equally-spaced parallel lines,
		randomly displaced from the origin.

IMPROVEMENTS/ENHANCEMENTS

	ks.test.ppm
		New argument `jitter=TRUE'.
		Algorithm prevents tied values in the Kolmogorov-Smirnov test.

	plot.owin
		Polygonal and rectangular windows can now be plotted
		with line shading (i.e. a grid of parallel lines
		drawn in the interior). 
		[This works for polygons with holes, multiple polygons, etc.]

	demo(spatstat)
		Examples of recent additions to spatstat have been included.

BUGS

	[1] envelope
		A scoping error occurred if envelope() was not called from
		the global environment (e.g. if envelope was called inside a
		function). This occurred because envelope() would evaluate the
		argument `simulate' in the global environment. This has been 
		changed so that `simulate' is now evaluated in the 
		parent frame. 

	[2]  "[.psp", clip.psp
		The resulting psp object sometimes contained inconsistent data.
		Fixed.