NEWS

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scuba 1.11-1 (2022-10-18)

OVERVIEW

• We thank Aren Leishman for contributions.
• Minor bug fixes.
• Minor changes to placate the package checker.

BUG FIXES

• hm An error occurred if M0 was missing or NULL. [Spotted by Aren Leishman.] Fixed.
• haldane An error occurred if progressive=FALSE and derived=TRUE. [Spotted by Aren Leishman.] Fixed.

scuba 1.11-0 (2021-05-14)

SIGNIFICANT USER-VISIBLE CHANGES

• Package 'scuba' now depends on R version 3.5.0 or later.
• Internal changes to code to satisfy CRAN.
• Minor corrections in help files.

scuba 1.10-0 (2020-05-15)

SIGNIFICANT USER-VISIBLE CHANGES

• Code now runs faster.
• Improvements to documentation.
• The package is now byte-compiled.

scuba 1.9-1 (2017-04-03)

OVERVIEW

• Updated package information (maintainer's address etc)

scuba 1.9-0

OVERVIEW

• internal changes to satisfy CRAN.

scuba 1.8-0 (2015-07-02)

SIGNIFICANT USER-VISIBLE CHANGES

• whichtank<- The replacement value can be a single number or character string indicating that the entire dive is performed on a single tank.
• whichtank<- Now issues warnings in some circumstances, to guard against common errors.

scuba 1.7-0 (2013-12-15)

NEW FUNCTIONS

• deco.ceiling Calculate decompression ceiling
• END Equivalent Narcotic Depth, for trimix gases.

SIGNIFICANT USER-VISIBLE CHANGES

• haldane Calculation is now much faster (by a factor of 500 for a typical real dive profile).
• haldane New argument 'derived' allows extra quantities to be calculated such as the washout and the decompression ceiling.

BUG FIXES

• showstates Additional arguments "..." were ignored after the first mouse click. Fixed.

scuba 1.6-0 (2013-11-22)

NEW FUNCTIONS

• ppO2 Calculates oxygen partial pressure.
• Mmix, M0mix Calculate maximum tolerated inert gas tensions (M-values) for a mixture of inert gases.

NEW DATASETS

• deepmine Dive profile for a long, extremely deep, decompression dive, using mixed gases, in a flooded mine.

SIGNIFICANT USER-VISIBLE CHANGES

• datasets All datasets are now lazy-loaded, so it is no longer necessary to type 'data(pedro)', etc.
• hm Changed default for 'mixrule' to something more sensible. Improved documentation for 'mixrule'.
• dive Now allows begin=NA to suppress assumption that the diver descends from the surface at the beginning of dive; and allows end=NA to suppress assumption that the diver ascends to the surface at the end of dive.
• introductory vignette Improved text.

BUG FIXES

• haldane There was a bug in the calculation of M-values at depth (not surfacing M-values). Consequently the results of 'haldane(relative=TRUE, deco=TRUE)' were wildly incorrect. [Spotted by Peter Buzzacott.] Fixed.