Labels groups of soil profiles within soil profile sketches.

profileGroupLabels(x0, x1, labels, y0 = 100,
y1 = 98, label.offset = 2, label.cex = 0.75)

Arguments

x0

integer indices to the first profile within each group

x1

integer indices to the last profile within each group

labels

vector of group labels

y0

baseline depth used for group brackets

y1

depth used for start and end markers for group brackets (see examples)

label.offset

vertical offset of group labels from baseline

label.cex

label size

Details

See examples below for ideas.

Note

This function is typically called by some other convenience function such as plotMultipleSPC.

See also

plotMultipleSPC

Examples

# load sample data
data(sp3)
data(sp4)

# convert soil colors
sp3$h <- NA ; sp3$s <- NA ; sp3$v <- NA
sp3.rgb <- with(sp3, munsell2rgb(hue, value, chroma, return_triplets=TRUE))
sp3[, c('h','s','v')] <- t(with(sp3.rgb, rgb2hsv(r, g, b, maxColorValue=1)))

# promote to SoilProfileCollection
depths(sp3) <- id ~ top + bottom
depths(sp4) <- id ~ top + bottom

# combine into a list
spc.list <- list(sp3, sp4)

# compute group lengths and start/stop locations
n.groups <- length(spc.list)
spc.lengths <- sapply(spc.list, length)
n.pedons <- sum(spc.lengths)
group.starts <- c(1, 1 + cumsum(spc.lengths[-n.groups]))
group.ends <- cumsum(spc.lengths)

# determine depths of first / last profile in each group
yy <- unlist(sapply(spc.list, function(i) profileApply(i, max)))
tick.heights <- yy[c(group.starts, group.ends)] + 2

# plot 2 SoilProfileCollection objects on the same axis
par(mar=c(1,1,1,1))
plot(sp3, n=n.pedons)
plot(sp4, add=TRUE, x.idx.offset=group.ends[1], plot.depth.axis=FALSE, id.style='side')
# annotate groups
profileGroupLabels(x0=group.starts, x1=group.ends,
labels=c('Collection 1', 'Collection 2'), y0=120, y1=tick.heights)