F_1_panel.levelplot | R Documentation |
These are the default panel functions for levelplot
and
contourplot
. Also documented is an alternative raster-based
panel function for use with 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$lwd,
border = "transparent",
border.lty = 1,
border.lwd = 0.1,
...,
region.type = c("grid", "contour"),
col.regions = regions$col,
alpha.regions = regions$alpha,
identifier = "levelplot")
panel.contourplot(...)
panel.levelplot.raster(x, y, z,
subscripts,
at = pretty(z),
...,
col.regions = regions$col,
alpha.regions = regions$alpha,
interpolate = FALSE,
identifier = "levelplot")
x , y , z |
Variables defining the plot. |
subscripts |
Integer vector indicating what subset of |
at |
Numeric vector giving breakpoints along the range of
|
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
|
label.style |
Controls how label positions and rotation are determined. A value
of |
contour |
A logical flag, specifying whether contour lines should be drawn. |
region |
A logical flag, specifying whether inter-contour regions should be filled with appropriately colored rectangles. |
col , lty , lwd |
Graphical parameters for contour lines. |
border |
Border color for rectangles used when |
border.lty , border.lwd |
Graphical parameters for the border |
... |
Extra parameters. |
region.type |
A character string, one of The |
col.regions |
A vector of colors, or a function to produce a vecor of colors, to
be used if |
alpha.regions |
numeric scalar controlling transparency of facets |
interpolate |
logical, passed to |
identifier |
A character string that is prepended to the names of grobs that are created by this panel function. |
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.
panel.levelplot.raster
is an alternative panel function that
uses the raster drawing abilities in R 2.11.0 and higher (through
grid.raster
). It has fewer options (e.g., can only
render data on an equispaced grid), but can be more efficient. When
using panel.levelplot.raster
, it may be desirable to render the
color key in the same way. This is possible, but must be done
separately; see levelplot
for details.
Deepayan Sarkar Deepayan.Sarkar@R-project.org.
The functionality of region.type = "contour"
is based on code
borrowed from the gridGraphics package, written by Zhijian
(Jason) Wen and Paul Murrell and ported to lattice by Johan Larsson.
levelplot
,
level.colors
,
contourLines
,
filled.contour
require(grid)
levelplot(rnorm(10) ~ 1:10 + sort(runif(10)), panel = panel.levelplot)
suppressWarnings(plot(levelplot(rnorm(10) ~ 1:10 + sort(runif(10)),
panel = panel.levelplot.raster,
interpolate = TRUE)))
levelplot(volcano, panel = panel.levelplot.raster)
levelplot(volcano, panel = panel.levelplot.raster,
col.regions = hcl.colors, cuts = 30, interpolate = TRUE)
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