Replacements of traditional graphics functions
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, alpha, fill, origin = 0, ...)
llines(x, ...) lpoints(x, ...) ltext(x, ...)
## S3 method for class 'default': llines(x, y = NULL, type = "l", col, alpha, lty, lwd, \dots) ## S3 method for class 'default': lpoints(x, y = NULL, type = "p", col, pch, alpha, fill, font, fontfamily, fontface, cex, \dots) ## S3 method for class 'default': 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, ...)
lsegments(x0, y0, x1, y1, x2, y2, col, alpha, lty, lwd, ...) 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, ...) 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, ...) lpolygon(x, y = NULL, border = "black", col = "transparent", font, fontface, ...)
panel.lines(...) panel.points(...) panel.segments(...) panel.text(...) panel.rect(...) panel.arrows(...) panel.polygon(...)
These functions are meant to be grid replacements of the corresponding
base R graphics functions, to allow existing Trellis code to be used
with minimal modification. The functions
essentally identical to the
l* versions, are recommended for
use in new code (as opposed to ported code) as they have more readable
See the documentation of the base functions for usage. Not all arguments are always supported. All these correspond to the default methods only.
There is a new
type="H" option wherever appropriate, which is
type="h", but with horizontal lines.