panel function

Map panel

Show multiple maps that share a single legend. methods

## S4 method for signature 'SpatRaster'
panel(x, main, loc.main="topleft", nc, nr, maxnl=16, 
        maxcell=500000, box=FALSE, pax=list(), plg=list(), range=NULL, halo=TRUE, 
        type=NULL, ...)

Arguments

• x: SpatRaster
• main: character. Main plot titles (one for each layer to be plotted). You can use arguments cex.main, font.main, col.main to change the appearance
• loc.main: numeric of character to set the location of the main title. Either two coordinates, or a character value such as "topleft")
• nc: positive integer. Optional. The number of columns to divide the plotting device in (when plotting multiple layers)
• nr: positive integer. Optional. The number of rows to divide the plotting device in (when plotting multiple layers)
• maxnl: positive integer. Maximum number of layers to plot (for a multi-layer object)
• maxcell: positive integer. Maximum number of cells to use for the plot
• box: logical. Should a box be drawn around the map?
• plg: see plot
• pax: see plot
• range: numeric. minimum and maximum values to be used for the continuous legend
• halo: logical. Use a halo around main (the title)?
• type: character. Type of map/legend. One of "continuous", "classes", or "interval". If not specified, the type is chosen based on the data
• ...: arguments passed to plot("SpatRaster", "numeric") and additional graphical arguments

See Also

plot and see rasterVis::levelplot and tidyterra::autoplot for more sophisticated panel plots.

Examples

r <- rast(system.file("ex/elev.tif", package="terra"))
v <- vect(system.file("ex/lux.shp", package="terra"))
x <- c(r, r/2, r*2, r)
names(x) <- paste0("(", LETTERS[1:4], ")")
panel(x)
panel(x, fun=function() lines(v), loc.main="topright")