RELEASE NOTES spatstat 1.12-7 11 February 2008 OVERVIEW New simulation algorithms for area-interaction processes and inhomogeneous Neyman-Scott processes. Various minor improvements. IMPROVEMENTS/ENHANCEMENTS rmh rmhmodel The implementation of the Metropolis-Hastings simulation algorithm (rmh) has been extended to include simulation of the area-interaction point process. An area-interaction model fitted by ppm() can now be simulated automatically using rmh. Example: data(swedishpines) fit <- ppm(swedishpines, ~1, AreaInter(4)) rmh(fit, control=list(nrep=1e4)) The current implementation is relatively slow compared to some of the other models (e.g. about 90 times slower than simulation of the Strauss process). rMatClust rThomas These functions will now simulate spatially inhomogeneous versions of the Matern Cluster process and the Thomas cluster process, with spatially inhomogeneous clusters, as described by Waagepetersen (2006). kstest The printed output (from print.kstest) and the annotation of plots (in plot.kstest) have been improved. data(chorley) The boundary polygon of this dataset has been modified (by slightly shifting one vertex) so that all data points lie inside the polygon. Summary functions Kest, Fest, Gest etc The printing of objects of class "fv" has been improved. kstest The printing of spatial Kolmogorov-Smirnov tests, and the annotation of plots, have been improved. The internal format of objects of class "kstest" has changed slightly. [There should be no compatibility problems.]