photobiology 0.5.11

Minor enhancement to improve interaction with package data.table

Function irrad() which is also the building block for other “irrad” and “ratio” functions now checks whether the data.table underlying the spectral object is locked and if locked makes a copy before continuing.

This makes is possible to use .SD as argument to these functions when traversing a spectrum object (containing several spectra, or “tagged” regions) using data.table syntax.

NOTE: Sources, and Windows binaries for R 3.1.x, are now available in the repository.

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