R: Default Panel Function for levelplot

panel.levelplot {lattice}

R Documentation

Default Panel Function for levelplot

Description

This is the default panel function for levelplot.

Usage

panel.levelplot(x, y, z, 
                subscripts,
                at = pretty(z),
                shrink,
                labels = NULL,
                label.style = c("mixed", "flat", "align"),
                contour = FALSE,
                region = TRUE,
                col = add.line$col,
                lty = add.line$lty,
                lwd = add.line$lwd,
                cex = add.text$cex,
                font = add.text$font,
                fontfamily = add.text$fontfamily,
                fontface = add.text$fontface,
                col.text = add.text$col,
                ...,
                col.regions = regions$col,
                alpha.regions = regions$alpha)
panel.contourplot(...)

Arguments

`x, y, z`	variables defining the plot
`subscripts`	integer vector indicating what subset of `x`, `y` and `z` to draw
`at`	numeric vector specifying breakpoints for change in colors
`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`	contour labels
`label.style`	controls choice of how label positions are determined.
`contour`	logical, specifying whether contour lines should be drawn
`region`	logical, specifying whether inter-contour regions should be filled with the appropriate color
`col, lty, lwd`	graphical parameters for contour lines
`cex, col.text, font, fontfamily, fontface`	graphical parameters for contour labels
`...`	extra parameters
`col.regions`	a vector of colors used if `region=TRUE`. Usually a subset of the colors are used, the exact number being one more than the length of `at`. These are chosen to be roughly equally spaced along `col.regions`. In the unusual case when `col.regions` is not longer than `at`, it is repeated to be as long as necessary.
`alpha.regions`	numeric scalar controlling transparency of facets

Details

The same 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.

Author(s)