panel.segplot: Default prepanel and panel functions for segplot

In latticeExtra: Extra Graphical Utilities Based on Lattice

Description

Draws line segments or rectangles. Mainly intended to be used in conjunction with the segplot function.

Usage

prepanel.segplot(x, y, z, subscripts, horizontal = TRUE, ...)

panel.segplot(x, y, z, level = NULL, subscripts, 
              at,
              draw.bands = is.factor(z),
              col, alpha, 
              lty, lwd,
              border,
              col.symbol = col, alpha.symbol = alpha,
              col.regions = regions$col,
              band.height = 0.6,
              horizontal = TRUE, 
              ...,
              segments.fun = panel.segments,
              centers = NULL,
              pch = 16)

Arguments

x, y, z	Vectors corresponding to x1, x2 and y respectively in the segplot formula. The names are different for compatibility with panel.levelplot. These are all the original vectors in data, not subsetted for particular panels.
level	optional vector controlling color of segments
centers	optional vector of ‘centers’ of the segments. If specified, points will be plotted at these y-locations.
pch	plotting character used for centers.
subscripts	integer subscript to be used as an indexing vector for x, y, z and level, giving the packet for the current panel.
horizontal	logical, whether the segments are to be drawn horizontally (the default) or vertically. This essentially swaps the role of the x- and y-axes in each panel.
at	values of level where color code changes
draw.bands	logical, whether to draw rectangles instead of lines
col, alpha, lty, lwd, border	Graphical parameters for the segment. Defaults to parameter settings for "plot.line" or "plot.polygon" for segments and rectangles respectively. col is overridden by col.regions if level is not null.
col.symbol, alpha.symbol	Graphical parameters for the point if centers are plotted. Defaults to the corresponding parameters for the segment.
col.regions	vector of colors as in levelplot
band.height	height of rectangles (applicable if draw.bands is TRUE
...	Other arguments, passed on to panel.rect (when draw.bands=TRUE), segments.fun (otherwise), panel.points (if centers is not NULL), etc. as appropriate.
segments.fun	function used to plot segments when draw.bands is FALSE. The default is to use panel.segments, but panel.arrows is a useful alternative (arguments to segments.fun can be provided via the ... argument, see example for segplot).

Value

For prepanel.segplot a list with components xlim and ylim.

Author(s)

Deepayan Sarkar [e-mail]

See Also

segplot

latticeExtra documentation built on Sept. 19, 2020, 3:01 p.m.