swissalt | R Documentation |
Data required for plotting a Switzerland map with elevation.
data(swissalt)
This data set contains three R objects. 'alt.mat' is a 192 by 115 matrix giving the elevation at the grid points defined by 'lon.vec' and 'lat.vec'.
Mathieu Ribatet
data(swissalt) layout(matrix(c(1,2), 1), width = c(3.5,1)) mar <- rep(0, 4) op <- par(mar = mar) breaks <- seq(0, 2000, by = 250) image(lon.vec, lat.vec, alt.mat, col = terrain.colors(length(breaks) - 1), xaxt = "n", yaxt = "n", bty = "n", xlab = "", ylab = "", xlim = c(480, 840), ylim = c(58, 300)) swiss(add = TRUE, city = TRUE) ##Heat bar mar <- c(3, 3, 3, 4) par(las = 1, mar = mar) plot.new() plot.window(xlim = c(0, 1), ylim = range(breaks), xaxs = "i", yaxs = "i") rect(0, breaks[-length(breaks)], 1, breaks[-1], col = terrain.colors(length(breaks) - 1), border = NA) axis(4, at = breaks[-length(breaks)]) box() title("Elevation\n(meters)") par(op)
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