contrastClass: Soil Color Contrast

In aqp: Algorithms for Quantitative Pedology

Soil Color Contrast

Description

Determine soil color contrast class according to methods outlined in the Soil Survey Manual. This function is typically called from colorContrast() which is simpler to use and provides more information.

Usage

contrastClass(v1, c1, v2, c2, dH, dV, dC, verbose = FALSE)

Arguments

v1	Munsell value of first color
c1	Munsell chroma of first color
v2	Munsell value of second color
c2	Munsell chroma of second color
dH	delta Hue
dV	delta Value
dC	delta Chroma
verbose	return a list for testing rules/cases

Details

This function is fully vectorized but expects all inputs have the same length.

Value

A vector of color contrast classes (ordered factor). A list when verbose is TRUE.

Author(s)

D.E. Beaudette

References

• Soil Survey Technical Note 2 wayback machine URL

See Also

colorContrast

Examples

## standard use, result is an ordered factor
# 10YR 6/3 vs 5YR 3/4
contrastClass(v1=6, c1=3, v2=3, c2=4, dH=2, dV=3, dC=1)

## verbose output, useful for testing rules/cases
# 10YR 6/3 vs 5YR 3/4
contrastClass(v1=6, c1=3, v2=3, c2=4, dH=2, dV=3, dC=1, verbose = TRUE)

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