Integration of the 'units' and 'errors' packages for a complete quantity
calculus system for R vectors, matrices and arrays, with automatic propagation,
conversion, derivation and simplification of magnitudes and uncertainties.

The quantities package provides integration of the 'units' and 'errors' packages for a complete quantity calculus system for R vectors, matrices and arrays, with automatic propagation, conversion, derivation and simplification of magnitudes and uncertainties.