huePositionPlot: Hue Position Chart

In sharpshootR: A Soil Survey Toolkit

Hue Position Chart

Description

A simple visualization of the hue positions for a given Munsell value/chroma according to Soil Survey Technical Note 2.

Usage

huePositionPlot(
  value = 6,
  chroma = 6,
  chip.cex = 4.5,
  label.cex = 0.75,
  contour.dE00 = FALSE,
  origin = NULL,
  origin.cex = 0.75,
  grid.res = 2,
  ...
)

Arguments

value	a single Munsell value
chroma	a single Munsell chroma
chip.cex	scaling for color chip rectangle
label.cex	scaling for color chip
contour.dE00	logical, add dE00 contours from origin, imlpicitly TRUE when origin is not NULL
origin	point used for distance comparisons can be either single row matrix of CIELAB coordinates, a character vector specifying a Munsell color. By default (NULL) represents CIELAB coordinates (L,0,0), where L is a constant value determined by value and chroma. See examples.
origin.cex	scaling for origin point
grid.res	grid resolution for contours, units are CIELAB A/B coordinates. Caution, small values result in many pair-wise distances which could take a very long time.
...	additional arguments to contour()

Value

nothing, function is called to generate graphical output

Examples

## Not run: 
huePositionPlot(value = 4, chroma = 4)

huePositionPlot(value = 6, chroma = 6)

huePositionPlot(value = 8, chroma = 8)

huePositionPlot(value = 6, chroma = 6, contour.dE00 = TRUE, grid.res = 2)

# shift origin to arbitrary CIELAB coordinates or Munsell color
huePositionPlot(origin = cbind(40, 5, 15), origin.cex = 0.5)

huePositionPlot(origin = '5G 6/4', origin.cex = 0.5)

huePositionPlot(origin = '10YR 3/4', origin.cex = 0.5)

huePositionPlot(value = 3, chroma = 4, origin = '10YR 3/4', origin.cex = 0.5)


## End(Not run)

sharpshootR documentation built on Oct. 23, 2024, 1:06 a.m.