Lattice: trellis graphics for R
The primary documentation of lattice is the online documentation accompanying the package. This is not yet as complete as we would like, but is fairly comprehensive. From within R, type
> help(Lattice)
for an introductory page with further links. The complete online documentation is also available in the form of a single PDF file at CRAN. Although this is intended primarily as a reference, a conscious attempt has been made to order the entries as naturally as possible.
Note that the online documentation is by nature somewhat terse, especially because of its constrained format. Gentler introductions are provided by two books that cover lattice:
There is also an upcoming online DataCamp course on Data Visualization with lattice.