r - levelplot: how to add space between colorkey and x-axis label -


i trying use levelplot plot simple digital elevation model (dem).

here code:

r1 = raster("ned10dem.tif") e = extent(460000,480000,4555000,4567500) rr1 = crop(r1,e) p = levelplot(rr1, scales=list(x=list(at=seq(450000,480000,4000))),               margin=f, cuts=200,               col.regions = terrain.colors(350,alpha=1),                colorkey=list(space="bottom"),               xlab="easting(m)", ylab="northing(m)") plot(p)

the plot ends looking this:

levelplot

what cannot figure out how increase space between colorkey , x-axis such colorkey not cover x-axis label.

add following:

par.settings = list(layout.heights=list(xlab.key.padding=1))

test example:

x <- seq(pi/4, 5*pi, length.out=100) y <- seq(pi/4, 5*pi, length.out=100) r <- as.vector(sqrt(outer(x^2, y^2, "+"))) grid <- expand.grid(x=x, y=y) grid$z <- cos(r^2) * exp(-r/(pi^3)) p <- levelplot(z~x+y, data=grid,                margin=f, cuts=200,                par.settings=list(layout.heights=list(xlab.key.padding=1)),                col.regions=terrain.colors(350, alpha=1),                 colorkey=list(space="bottom"),                xlab="easting(m)", ylab="northing(m)") print(p)

levelplot


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