Add direct labels to a grouped lattice plot. This works by parsing
the trellis object returned by the high level plot function, and
returning it with a new panel function that will plot direct
labels using the specified method.
Usage
## S3 method for class 'trellis':
direct.label(p,
method = NULL,
debug = FALSE)
Arguments
p
The lattice plot (result of a call to a high-level lattice
function).
method
Method for direct labeling as described in ?label.positions.