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The apcluster package implements Frey's and Dueck's Affinity Propagation clustering in R. The package further provides leveraged affinity propagation, exemplar-based agglomerative clustering, and various tools for visual analysis of clustering results.
re-implementation of heatmap() method: dendrograms can now be plotted even for APResult and ExClust objects as well as for cluster hierarchies based on prior clusterings; color bars can now be switched off and colors can be changed by user (by new 'sideColor' argument); dendrograms can be switched on and off (by 'Rowv' and 'Colv' arguments);
added as.hclust() and as.dendrogram() methods
added new arguments 'base', 'showSamples', and 'horiz' to the plot() method with signature (x="AggExResult", y="missing"); moreover, parameters for changing the appearance of the height axis are now respected as well
streamlining of methods (redundant definition of inherited methods removed)
various minor improvements of code and documentation