Updates to the ‘aqp’ Package for R (version 0.98-3)

November 30, 2010
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Just released an updated version of our ‘aqp’ package for quantitative soils investigations, available on CRAN and R-Forge. Some of the major changes are listed below:

 from the aqp NEWS file:
-------------------------- aqp 0.98-1 (2010-11-23) --------------------------
* added basic demo: demo(aqp)
* soil.slot() now computes aggregate probabilities over user-defined segments
* re-write of weighted profile aggregation functions
  - aqp package now requires Hmisc package
  - using Hmisc::wtd.{mean,var,quantile} to compute values
	+ better adjustment of weights when computing weighted SD
	+ fixes long-standing bugs with wt. mean/SD when NA present in x_i and not in wt_i
	+ weighted quantiles now computed
* addition of new (experimental) S4 classes and methods
  - these are now in the aqp_S4 branch
* added n.depth.ticks option to profile_plot()
* profile_compare() algorithm stabilized, new default settings
* removed code in profile_compare() that is now obsolete
  - note that this will cause changes to numerical classification of soil profiles

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