addVolumeFraction: Symbolize Volume Fraction on a Soil Profile Collection Plot

In aqp: Algorithms for Quantitative Pedology

Description

Symbolize volume fraction on an existing soil profile collection plot.

Usage

addVolumeFraction(x, colname, res = 10, cex.min = 0.1, 
cex.max = 0.5, pch = 1, col = "black")

Arguments

x	a SoilProfileCollection object
colname	character vector of length 1, naming the column containing volume fraction data (horizon-level attribute)
res	integer, resolution of the grid used to symbolize volume fraction
cex.min	minimum symbol size
cex.max	maximum symbol size
pch	plotting character
col	color of the symbol

Details

This function can only be called after plotting a SoilProfileCollection object.

Note

Details associated with a call to plot.SoilProfileCollection are automatically accounted for within this function: e.g. plot.order, width, etc.

Author(s)

D.E. Beaudette

See Also

plotSPC

Examples

# sample data
data(loafercreek, package='soilDB')

# subset first 10 profiles 
s <- loafercreek[1:10, ]

# replace 0% frags with NA
s$total_frags_pct[which(s$total_frags_pct == 0)] <- NA

# plot in random order, note that annotations follow
par(mar=c(0, 0, 3, 0))
plot(s, color='total_frags_pct', plot.order=sample(1:length(s)))
addVolumeFraction(s, 'total_frags_pct', pch=1)

par(mar=c(0, 0, 0, 0))
plot(s, max.depth=100, name='total_frags_pct', cex.name=1, axis.line.offset=-4.25)
addVolumeFraction(s, 'total_frags_pct', pch=1)

aqp documentation built on May 2, 2019, 4:51 p.m.