[R-pkgs] scuba 1.2-1

[adrian at maths.uwa.edu.au]

	scuba 1.2-1

	** now with added Helium **

'scuba' is a contributed R package that performs theoretical calculations
about scuba diving --- dive profiles, decompression models,
gas toxicity and so on.

New features in version 1.2-1:

	. Breathing gases may now contain Helium
          as well as Oxygen and Nitrogen.

	. Decompression models now handle breathing gases
          containing Helium.

	. Haldane (diffusion compartment) models are now
		represented by objects of a special class "hm".

	. Dive profiles (objects of class "dive") can be
		modified more easily. You can change the breathing gas,
                modify the depth and duration of a dive,
                or cut-and-paste several dive profiles.

	. Bug fix in showstates().

New functions:

	ndl	Calculates No-Decompression Limits

	trimix	Creates a gas object representing trimix
		(oxygen/nitrogen/helium mixture)

	hm	Creates a new Haldane model (diffusion compartment model
		for decompression theory).

	pickmodel
		Selects one of the standard Haldane models.

	tanklist
	tanklist<-
		Extracts or modifies the breathing gases used in a dive.

	chop.dive
		Extracts part of a dive profile.

	depths.dive<-
	times.dive<-
	durations.dive<-
		Operators for modifying a dive profile.


Adrian Baddeley, 22 june 2008