repairMissingHzDepths: Repair Problematic Lower Horizon Depths

In aqp: Algorithms for Quantitative Pedology

Repair Problematic Lower Horizon Depths

Description

Attempt a simple repair of horizon bottom depths in the presence of NA, or in cases where the horizon shares a common top and bottom depth. Both situations are common in pedon description where "contact" (Cd, Cr, R, etc.) was described without a lower depth.

Usage

repairMissingHzDepths(x, adj = 10, max.depth = 200)

Arguments

x	SoilProfileCollection
adj	vertical offset applied to "repair" missing bottom depths when top and bottom depth are equal or bottom depth is missing. (NA to use max.depth)
max.depth	If adj is NA, or the resulting offset sum exceeds max.depth, max.depth is used.

Details

This repair is applied to the deepest horizon within a profile as identified by getLastHorizonID, as well as to bottom depths of any horizon that has a horizon below it. Horizon bottom depths are adjusted by adding adj (if non-NA). If the resulting value exceeds max.depth, the max.depth value is returned (if not NA).

Value

SoilProfileCollection with a new (logical) horizon-level attribute .repaired marking affected horizons

Examples

h <- data.frame(
id = c(1, 1, 1, 2, 2, 2, 2, 3, 3),
top = c(0:2, 0:3, 0:1) * 10,
bottom = c(rep(NA_integer_, 7), c(10, 99))
)

# NA depths result in warnings
suppressWarnings({
  depths(h) <- id ~ top + bottom
})

# inspect data before repairs
plotSPC(h)

g <- repairMissingHzDepths(h)

# all depth logic now valid
all(checkHzDepthLogic(g)$valid)

# inspect
plotSPC(g)

# no adj, max.depth only
f <- repairMissingHzDepths(h, adj = NA, max.depth = 200)
all(checkHzDepthLogic(f)$valid)
plotSPC(f)

# max.depth defaults to max(x) if too small
f$bottom[c(3,7)] <- NA
d <- repairMissingHzDepths(f, adj = NA, max.depth = 20)
all(checkHzDepthLogic(d)$valid)
plotSPC(d)

aqp documentation built on Oct. 19, 2024, 5:06 p.m.