vector on a 64-bit platform and give an error on a 32-bit one.

It is now possible for 64-bit builds to allocate amounts of

memory limited only by the OS.  It may be wise to use OS

environment.  A number of packages need a limit of at least 4GB of

to the amount of RAM installed: this limit can be changed by

Negative numbers for colours are consistently an error:

previously they were sometimes taken as transparent, sometimes

mapped into the current palette and sometimes an error.

compiled code.  If true (which can be enabled by setting the

integer, double and complex arguments are always copied, and

checked for writing off either end of the array on return from the

compiled code (when a second copy is made).  This also checks

individual elements of character vectors passed to

This is not intended for routine use, but can be very helpful in

which is representable as an integer (as often happens for package

Matrix indexing of data frames by two-column numeric indices

is now supported for replacement as well as extraction.

argument, useful for a character result.

component of the result: the previous definition is

always warned of a lack of comparability of log-likelihoods for

non-stationary models.  (Suggested by Jouni Helske.)

It is now possible to use a formula stored in a variable;

previously, it had to be given explicitly in the function call.

Setting an element of the graphics argument

negative or infinite value is now an error.  Lines corresponding

Previously the behaviour was device-dependent.

length-one argument.   Previously some silently took the first

element of a longer vector, but not always when documented to do so.

unsafe in a shell (e.g., absolute paths containing spaces) now uses

has been extended to handle raw vectors.

Previously, it only worked in the other direction.

been added, to allow generation of in-text citations from

has been added to report the name of the current default style.

or all variables to be plotted on logarithmic scale.

does a better job when given a model with

interactions (and no longer attempts to plot interaction terms).