These functions are intended to replace common low level traditional graphics functions, primarily for use in panel functions. The originals can not be used (at least not easily) because lattice panel functions need to use grid graphics. Low level drawing functions in grid can be used directly as well, and is often more flexible. These functions are provided for convenience and portability.
lplot.xy(xy, type, pch, lty, col, cex, lwd, font, fontfamily, fontface, col.line, col.symbol, alpha, fill, origin = 0, ..., identifier, name.type)
llines(x, ...)
lpoints(x, ...)
ltext(x, ...)
"llines"(x, y = NULL, type = "l", col, alpha, lty, lwd, ..., identifier, name.type)
"lpoints"(x, y = NULL, type = "p", col, pch, alpha, fill, font, fontfamily, fontface, cex, ..., identifier, name.type)
"ltext"(x, y = NULL, labels = seq_along(x), col, alpha, cex, srt = 0, lineheight, font, fontfamily, fontface, adj = c(0.5, 0.5), pos = NULL, offset = 0.5, ..., identifier, name.type)
lsegments(x0, y0, x1, y1, x2, y2, col, alpha, lty, lwd, font, fontface, ..., identifier, name.type)
lrect(xleft, ybottom, xright, ytop, x = (xleft + xright) / 2, y = (ybottom + ytop) / 2, width = xright - xleft, height = ytop - ybottom, col = "transparent", border = "black", lty = 1, lwd = 1, alpha = 1, just = "center", hjust = NULL, vjust = NULL, ..., identifier, name.type)
larrows(x0 = NULL, y0 = NULL, x1, y1, x2 = NULL, y2 = NULL, angle = 30, code = 2, length = 0.25, unit = "inches", ends = switch(code, "first", "last", "both"), type = "open", col = add.line$col, alpha = add.line$alpha, lty = add.line$lty, lwd = add.line$lwd, fill = NULL, ..., identifier, name.type)
lpolygon(x, y = NULL, border = "black", col = "transparent", fill = NULL, font, fontface, ..., identifier, name.type)
panel.lines(...)
panel.points(...)
panel.segments(...)
panel.text(...)
panel.rect(...)
panel.arrows(...)
panel.polygon(...)x2 and
y2 are available for for S compatibility. length specifies the length
in terms of unit, which can be any valid grid unit as long as
it doesn't need a data argument. unit defaults to
inches, which is the only option in the base version of the
function, arrows. larrows and panel.larrows, type is either
"open" or "closed", indicating the type of
arrowhead. code, using
descriptive names rather than integer codes. If specified, this
overrides codefill applies to points when pch is in
21:25 and specifies the fill color, similar to the bg
argument in the base graphics function points. For
devices that support alpha-transparency, a numeric argument
alpha between 0 and 1 can controls transparency. Be careful
with this, since for devices that do not support alpha-transparency,
nothing will be drawn at all if this is set to anything other than
0. fill, font and fontface are included in
lpolygon and lsegments only to ensure that they are
not passed down (as gpar does not like them).
type="h" or type="H", the value to
which lines drop down. rectgrid.rect "panel", "strip",
"strip.left", or "" (for no extra information).
panel.* are
essentally identical to the l* versions, are recommended for
use in new code (as opposed to ported code) as they have more readable
names.See the documentation of the base functions for usage. Not all arguments are always supported. All these correspond to the default methods only.
points, lines, rect,
text, segments, arrows,
Lattice