RELEASE NOTES 

		spatstat 1.17-6

		8 feb 2010

	We thank Simon Byers and Adrian Raftery for 
	generous contributions.

OVERVIEW
	Nearest neighbour clutter removal algorithm.
	New documentation for the 'fv' class.
	Minor improvements and bug fixes.

NEW FUNCTIONS
	
	nnclean
		Nearest neighbour clutter removal
		for recognising features in spatial point patterns.
		Technique of Byers and Raftery (1998) 
		[From original code by Simon Byers and Adrian Raftery.]

	marks.ppx
	marks<-.ppx
		Methods for extracting and changing marks
		in a multidimensional point pattern

	latest.news
		Print news about the latest version of the package.

NEW FUNCTIONS (advanced use only)

	fv
		Creates an object of class 'fv' 

	cbind.fv
	collapse.fv
		Combine objects of class 'fv'		

	bind.fv
		Add additional columns of data to an 'fv' object

		
IMPROVEMENTS/ENHANCEMENTS

	news
		spatstat now has a NEWS file, containing documentation
		about each new release of the package. The file can be
		printed in full by typing news(package="spatstat"). 
		
	areaGain, areaLoss
		New algorithms in case exact=TRUE.
		Syntax slightly modified.

	with.hyperframe
		The result now inherits 'names' from the row names
		of the hyperframe.

		New argument 'enclos' controls the environment
		in which the expression is evaluated.

		The algorithm is now smarter at simplifying the result
		when simplify=TRUE.

	update.ppm
		Tweaked to improve the ability of ppm objects
		to be re-fitted in different contexts.

BUGS

	[1] $<-.hyperframe
		Destroyed the row names of the hyperframe.
		Fixed.

	[2] model.matrix.ppm
		Minor inconsistencies.
		Fixed.		

	[3] ppm
		Coefficient vector had incorrect format
		in the default case of a uniform Poisson process.
		Fixed.

	[4] plot.ppx
		Crashed if the argument 'main' was given.
		Fixed.