RELEASE NOTES 

		spatstat 1.17-1

		05 November 2009


OVERVIEW
	Conditional Simulation of point processes.
	Functions for analysing 3-dimensional point patterns.
	Basic support for multidimensional space-time point patterns.
	New geometrical operations for windows and tessellations.
	Package decoupled from 'gpclib' because of licence issues.
	Spatstat now requires R 2.10.0	

LICENCE
	spatstat is covered by the GNU Public Licence. 
	
	However, spatstat versions 1.13-4 to 1.17-0 depended on 
	the package 'gpclib', which has a more restrictive licence 
	(forbids commercial use). 

	As a temporary measure, spatstat 1.17-1 can be run 
	with or without gpclib, by setting the flag 

		spatstat.options("gpclib")

	Future versions of spatstat will relinquish the use of gpclib
	altogether.

NEW CLASSES

	ppx 
		Class of multidimensional space-time point patterns
		(ppx, print.ppx)

	pp3
		Class of three-dimensional point patterns
		(ppx3, print.ppx3, plot.ppx3, unitname.ppx3)

	box3
		Class of three-dimensional boxes
		(box3, as.box3, print.box3, unitname.box3)


NEW FUNCTIONS

	F3est, G3est, K3est
		Analogues of Fest, Gest, Kest for 
		three-dimensional point patterns.

	as.hyperframe
		Converts other kinds of data to a hyperframe

	as.hyperframe.ppx
		Extract coordinates and marks from a general
		point pattern.

	bdist.tiles
		Computes the distance from each tile of a tessellation
		to the boundary of the tessellation.

	border
		Computes the set difference between a window
		and its erosion or dilation.

	coords
		Extract coordinates from a general point pattern.

	diameter.box3
	volume.box3
	shortside.box3
	eroded.volumes
		Basic three-dimensional geometry with boxes.

	setminus.owin
		Set subtraction operator for windows.

	with.hyperframe
		Evaluate expression in hyperframe

	reset.spatstat.options
		Resets all spatstat's global parameters and options
		to their original default values.

IMPROVEMENTS/ENHANCEMENTS

	rmh, rmh.default, rmh.ppm
		Conditional simulation is now supported.
		For details see help(rmh.default) or help(rmhcontrol)

	rmhcontrol
		New argument x.cond specifies the conditioning points
		for conditional simulation.
		Internal format of 'rmhcontrol' objects has changed.

	hist.im
		The value returned by hist.im can now be plotted
		in all cases (i.e. whatever the type of pixel values)

	rSSI 
		New argument x.init allows the simulation to start
		with a specified initial configuration of points.

	plot.owin
		When the window is a mask, the argument "col" is now handled
		more sensibly. The default colours are now equal to
		par("fg") inside the window, and par("bg") outside.
		These are typically black and white, respectively.

	spatstat.options
		New option 'gpclib' determines whether the package
		gpclib will be used for computing polygons.

		If this is set to TRUE then geometrical operations 
		such as union.owin and intersect.owin applied to polygons 
		will result in a polygon, and will be computed using gpclib.
	
		If spatstat.options("gpclib") is FALSE (the default), 
		then such geometrical operations will result in a binary mask, 
		and will be computed using spatstat code under 
		the GNU Public Licence.


	Pairwise
		improved print behaviour.

	chop.tess
		Faster processing when the tessellation is 
		based on a pixel image.
BUGS

	[1] hyperframe
		When column names were not provided, 
		the default names were malformed.
		Fixed.