sharpshootR (version 1.6)

plotAvailWater: Visual Demontration of Available Soil Water

Description

Generate a simplistic diagram of the various fractions of water held within soil pore-space.

Usage

plotAvailWater(x, width = 0.25, cols = c(grey(0.5), 
"DarkGreen", "LightBlue", "RoyalBlue"), name.cex = 0.8,
annotate=TRUE)

Arguments

x

a data.frame containing sample names and water retention data, see examples below

width

vertical width of each bar graph

cols

a vector of colors used to symbolize 'solid phase', 'unavailable water', 'available water', and 'gravitational water'

name.cex

character scaling of horizon names, printed on left-hand side of figure

annotate

logical, annotate AWC

Examples

# NOT RUN {
# demonstration
s <- data.frame(
name=c('loamy sand', 'sandy loam', 'silt loam', 'clay loam'), 
pwp=c(0.05, 0.1, 0.18, 0.2), 
fc=c(0.1, 0.2, 0.38, 0.35), 
sat=c(0.25, 0.3, 0.45, 0.4))
s$solid <- with(s, 1-sat)

par(mar=c(5, 6, 0.5, 0.5))
plotAvailWater(s, name.cex=1.25)

# use some real data from SSURGO
# }
# NOT RUN {
if(requireNamespace("curl") &
   curl::has_internet() &
   require(soilDB)) {
  
  q <- "SELECT hzdept_r as hztop, hzdepb_r as hzbottom, 
hzname as name, wsatiated_r/100.0 as sat, 
wthirdbar_r/100.0 as fc, wfifteenbar_r/100.0 as pwp, awc_r as awc
FROM chorizon 
WHERE cokey IN (SELECT cokey from component where compname = 'dunstone') 
AND wsatiated_r IS NOT NULL 
ORDER BY cokey, hzdept_r ASC;"

x <- SDA_query(q)
x <- unique(x)
x <- x[order(x$name), ]
x$solid <- with(x, 1-sat)

par(mar=c(5, 5, 0.5, 0.5))
plotAvailWater(x)
  
}


# }
# NOT RUN {
# }