new packages: grid and lattice

[Paul Murrell]

Hi

Two new packages have just been uploaded to the _DEVEL_ section on CRAN:


1.  package "grid"

AUTHOR
Paul Murrell

OVERVIEW
This package provides an altenative graphics system for R.

FEATURES
Very flexible layout facilities (viewports, units, layouts)
Component-based design (graphics can be constructed incrementally and
hierarchically)
Basic support for interaction (graphics functions return "objects")
Highly customisable and extensible

BUGS/UNIMPLEMENTED FEATURES
No clipping
Only single active device
Viewport rotation very fragile
...


2.  package "lattice"

AUTHOR
Deepayan Sarkar

OVERVIEW
This package provides graphics functionality similar to the Trellis suite in
S-Plus.

FEATURES
Mutipanel plots of one or two variables conditioned on one or more other
variables.
Formula-style specification of conditioning.
Strips atop the panels to indicate levels of the conditioning variables.

BUGS/UNIMPLEMENTED FEATURES
The "key" argument.
The "font" argument.


The lattice package uses the graphics system provided by grid so you will
need to download both packages in order to use lattice.  Furthermore, the
packages are most likely to work only with the latest development release of
R.  At the very least they require R 1.2.0 or later.

The packages are in the DEVEL section of CRAN because they are far from
complete and have many bugs and missing features.  However, they should
contain sufficient functionality to be of use to some people.  We are also
very interested in feedback on things that don't work, things that people
don't like, and even things that people do like :)

Paul Murrell
Deepayan Sarkar



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