RELEASE NOTES 

		spatstat 1.17-5

		06 jan 2010
	
OVERVIEW
	Nearest-neighbour methods extended and vastly accelerated.
	Minor additions, improvements and bug fixes.

NEW FUNCTIONS

	pairdist.pp3
	crossdist.pp3
	nndist.pp3
	nnwhich.pp3
		Interpoint distances for three-dimensional point patterns
	
	periodify
		Make several shifted copies of a spatial pattern
		and optionally combine them into a single
		periodic pattern.

	dknn
	pknn
	qknn
	rknn
		Density, distribution function, quantile function
		and random generation for the random distance to
		the k-th nearest neighbour in a Poisson point process
		in d dimensions.

	dim.hyperframe
	dim.fasp
		dim(), nrow() and ncol() are now defined
		for hyperframes and function arrays.


IMPROVEMENTS/ENHANCEMENTS

	nndist.ppp
	nndist.default
	nnwhich.ppp
	nnwhich.default
		Accelerated by three orders of magnitude
		in the case k > 1 
		(code rewritten in C).

	nndist, nnwhich
		The argument 'k' can now be a vector:
		k = 2:3 specifies the second and third nearest neighbours.

	envelope
		Default plot behaviour improved in the case VARIANCE=TRUE.

	demo(spatstat)
		Substantial additions and improvements.

BUGS

	[1] pairdist, crossdist
		If periodic=TRUE was selected, and the window
		was not square, the periodic distances were
		calculated incorrectly.
		Fixed.

	[2] ppm
		If correction="periodic" was selected, and the window
		was not square, the correction was computed wrongly.
		Fixed.

	[3] pairdist.default, pairdist.ppp
		When method="interpreted" was selected, 
		the argument 'squared' was ignored (and taken to be FALSE).
		Fixed.

	[4] envelope
		when VARIANCE=TRUE, the upper and lower significance bands
		'hi' and 'lo' were wrongly labelled (hi and lo were exchanged).
		Fixed.

	[5] rNeymanScott, rMatClust, rThomas, rGaussPoisson
		When the parent intensity 'kappa' was a pixel image,
		error messages were generated incorrectly.
		Fixed.
		
	[6] plot.ppp
		If 'rejected points' were present, and if the 
		window was a mask, then the window obscured the points.
		Fixed.

	[7] envelope
		when VARIANCE=TRUE, the default plotting behaviour 
		was unsatisfactory.
		Fixed.