panel.levelplot {lattice} | R Documentation |
This is the default panel function for levelplot
.
panel.levelplot(x, y, z, subscripts, at = pretty(z), shrink, labels, label.style = c("mixed", "flat", "align"), contour = FALSE, region = TRUE, col = add.line$col, lty = add.line$lty, lwd = add.line$lwd, ..., col.regions = regions$col, alpha.regions = regions$alpha) panel.contourplot(...)
x, y, z |
Variables defining the plot. |
subscripts |
Integer vector indicating what subset of x , y and
z to draw.
|
at |
Numeric vector giving breakpoints along the range of
z . See levelplot for details.
|
shrink |
Either a numeric vector of length 2 (meant to work as both x and y components), or a list with components x and y which are numeric vectors of length 2. This allows the rectangles to be scaled proportional to the z-value. The specification can be made separately for widths (x) and heights (y). The elements of the length 2 numeric vector gives the minimum and maximum proportion of shrinkage (corresponding to min and max of z). |
labels |
Either a logical scalar indicating whether the labels are to be
drawn, or a character or expression vector giving the labels
associated with the at values. Alternatively, labels
can be a list with the following components:
|
label.style |
Controls how label positions and rotation are determined. A value
of "flat" causes the label to be positioned where the contour
is flattest, and the label is not rotated. A value of
"align" causes the label to be drawn as far from the
boundaries as possible, and the label is rotated to align with the
contour at that point. The default is to mix these approaches,
preferring the flattest location unless it is too close to the
boundaries.
|
contour |
A logical flag, specifying whether contour lines should be drawn. |
region |
A logical flag, specifying whether inter-contour regions should be filled with the appropriate color. |
col, lty, lwd |
graphical parameters for contour lines |
... |
Extra parameters. |
col.regions |
A vector of colors, or a function to produce a vecor of colors, to
be used if region=TRUE . Each interval defined by at
is assigned a color, so the number of colors actually used is one
less than the length of at . See level.colors
for details on how the color assignment is done.
|
alpha.regions |
numeric scalar controlling transparency of facets |
The same panel function is used for both levelplot
and
contourplot
(which differ only in default values of some
arguments). panel.contourplot
is a simple wrapper to
panel.levelplot
.
When contour=TRUE
, the contourLines
function is used to
calculate the contour lines.
Deepayan Sarkar Deepayan.Sarkar@R-project.org
levelplot
,
level.colors
,
contourLines