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).

The parser now incorporates code from Romain Francois'

package, to support more detailed computation on

the code, such as syntax highlighting, comment-based

for when speed is required (and names are not).

packages with non-ASCII demos: it defaults to the package encoding

converts inputs with a marked encoding to

the current locale: previously it made some attempt to pass

through as bytes inputs invalid in the current locale.