Legend properties when legend.only=T (raster package)

Question

When plotting only the legend (of a raster object - a colorbar):

require(raster)
r = raster()
r[] = 1
plot(r, legend=F)
plot(r, zlim=c(-10,10), lege         


        

Answer 1

It's also possible to work with the 'smallplot' argument in when 'legend.only=TRUE'. Small works from the bottom/left corner of the plot area smallplot=c(min % from left, max % from left, min % from bottom, max % from bottom).

# load data & plot
require(raster); data(volcano); r <- raster(volcano)
plot(r, col=topo.colors(100), legend=FALSE, axes=FALSE)
r.range <- c(minValue(r), maxValue(r))

plot(r, legend.only=TRUE, col=topo.colors(100), legend.width=1, legend.shrink=0.75,
    smallplot=c(0,.09, .3,.75)); par(mar = par("mar"))

plot(r, legend.only=TRUE, col=topo.colors(100), legend.width=1, legend.shrink=0.75,
    smallplot=c(0.3,0.5, 0.2,0.7)); par(mar = par("mar"))

plot(r, legend.only=TRUE, col=topo.colors(100), legend.width=1, legend.shrink=0.75,
    smallplot=c(0.85,0.9, 0.7,0.9)); par(mar = par("mar"))

plot(r, legend.only=TRUE, col=topo.colors(100), legend.width=1, legend.shrink=0.75,
    smallplot=c(0.7,0.90, 0.05,0.2)); par(mar = par("mar"))