RELEASE NOTES 

		spatstat 1.13-3

		22 June 2008

	We thank Marcelino de la Cruz for contributions.
	
OVERVIEW
	New function for smoothing a pixel image.
	Improved handling of discretisation effects in pixel images.
	K functions have a workaround for a compiler/hardware bug.

NEW FUNCTIONS

	blur
		Applies Gaussian blur to a pixel image.

IMPROVEMENTS/ENHANCEMENTS

	Kinhom, Kdot.inhom, Kcross.inhom, Kmulti.inhom	
		Improved handling of NA's and discretisation effects
		in pixel images.
		If 'lambda' or 'lambdaI' or 'lambdaJ' is a pixel image which
		does not completely cover the observation window
		of the point pattern X, then the missing pixel values
		will be estimated by kernel-weighted spatial smoothing.

	rescue.rectangle
		The test for determining whether a polygon is a rectangle
		is now scale-independent.

	Kdot, Kcross, Ldot, Lcross, 
	Kdot.inhom, Kcross.inhom
		Default values of 'i' and 'j' improved.

BUGS

	[1] Kdot.inhom, Kcross.inhom, Kmulti.inhom	

		An error occurred if 'lambdaI' or 'lambdaJ' was 
		a pixel image which did not completely cover the 
		observation window of the point pattern X.
		Fixed.

	[2] Second order summary functions
	    (Kest, Kcross, Kdot, Kmulti, Kinhom, Kcross.inhom, Kdot.ihom,
	    Kmulti.inhom, Lest, Linhom, Lcross, Ldot, localK, 
	    markcorr, marktable, pcf):

		On some hardware, these functions occasionally crashed
		with the error message
			"Internal error: C routine complains that 
			insufficient space was allocated"
		or issued a warning message
			"Internal error: npairs miscounted"
		This is due to a bug (or 'feature') in the gcc compiler
		(gcc bug #323). 
		A workaround has been developed.
		Fixed.