Wednesday, July 11, 2012

PAlaeontological STatistics - Update

Many of you will know how much I like the statistical package PAST (PAlaeontological STatistics ) devised by Øyvind Hammer at the Natural History Museum of the University of Oslo. This is a free software package that can be downloaded from the Internet and Øyvind is remarkable in that the package is continuously updated and refined. The latest version (2.16) can be downloaded at
Among the latest additions are: Box-Cox transformation with max likelihood estimation of lambda; Anderson-Darling normality test; Nearest neighbor point analysis: Plotting of distance histogram vs. expected distribution; Hangle (outline shape analysis) now includes 'Htree' fitting; Coefficient of variation: Now with bootstrapped confidence intervals; Similarity indices: Added Mixed (as available in other modules); Rarefaction: Labels added for multiple-sample plot; User controllable range of color maps, new color maps; User controllable number of lines in spline deformation grids; Bubble plot: Option for 95% confidence ellipses; Rarefaction: Option to not show standard deviations; Improvement on number of decimals in graph axes.


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