RELEASE NOTES spatstat 1.12-6 04 February 2008 OVERVIEW New summary functions, simulation routines, interaction model. Improvements to envelope command. Extension to distance code for line segments. NEW FUNCTIONS AreaInter enables the area-interaction model to be fitted to data e.g. ppm(X, ~1, AreaInter(2)) Linhom Computes the inhomogeneous version of Ripley's L-function. marktable Tabulates frequencies of marks in an R-neighbourhood of each point in a multitype point pattern. rGaussPoisson Generates simulated realisations of the Gauss-Poisson process. IMPROVEMENTS/ENHANCEMENTS envelope The argument `simulate' can now be a list of point patterns. This allows the user to compute the envelopes of several different statistics based on the same set of simulated point patterns, which improves efficiency and consistency. pairdist.psp crossdist.psp These functions have a new argument 'type'. If type = "separation", the minimum distance between each pair of line segments is computed. BUGS None reported!