MunsellNameFromHVC: Convert Munsell Numeric to Munsell String Notation

In munsellinterpol: Interpolate Munsell Renotation Data from Hue/Chroma to CIE/RGB

Convert Munsell Numeric to Munsell String Notation

Description

Convert Munsell Numeric to Munsell String Notation

Usage

MunsellNameFromHVC( HVC, format='g', digits=2 )

HueStringFromNumber( Hue, format='g', digits=2 )

Arguments

HVC	a numeric Nx3 matrix or a vector that can be converted to such a matrix. Each row has an HVC vector, where H is Hue Number, and V and C are the standard Munsell Value and Chroma. The Hue is automatically wrapped to the interval (0,100].
Hue	a numeric vector of Hue Numbers, which are automatically wrapped to the interval (0,100].
format	determines the meaning of the argument digits, and usually equal to 'g' or 'f' though other options are available, see formatC() for details. When format='f' trailing 0s might be displayed.
digits	when format='g' the number of significant digits, and when format='f' the number of digits displayed after the decimal point. Both format and digits are passed as arguments to formatC().

Value

Both functions return a character vector of length N. MunsellNameFromHVC() returns the full notation. HueStringFromNumber() returns just initial the hue part; which is useful for labeling plots.

Note

If format='f', then Chroma is first rounded to to the given digits. Chromas close to 0 may then become 0 and be displayed as a neutral, see Examples.
The width argument of formatC() is always set to 1, to suppress leading spaces.

Author(s)

Glenn Davis

References

ASTM D 1535-97. Standard Practice for Specifying Color by the Munsell System. 1997

See Also

formatC(), HVCfromMunsellName(), HueNumberFromString()

Examples

MunsellNameFromHVC( c(39,5.1,7.3,  0,5.1234,0.003 )  )
##  [1] "9GY 5.1/7.3"    "10RP 5.1/0.003"

MunsellNameFromHVC( c(39,5.1,7.34,  0,5.1234,0.003 ), format='f' )
##  [1] "9.00GY 5.10/7.34" "N 5.10/"

HueStringFromNumber( seq( 2.5, 100, by=2.5 ) )   # make nice labels for a plot
##   [1] "2.5R"  "5R"    "7.5R"  "10R"   "2.5YR" "5YR"   "7.5YR" "10YR"  "2.5Y" 
##  [10] "5Y"    "7.5Y"  "10Y"   "2.5GY" "5GY"   "7.5GY" "10GY"  "2.5G"  "5G"   
##  [19] "7.5G"  "10G"   "2.5BG" "5BG"   "7.5BG" "10BG"  "2.5B"  "5B"    "7.5B" 
##  [28] "10B"   "2.5PB" "5PB"   "7.5PB" "10PB"  "2.5P"  "5P"    "7.5P"  "10P"  
##  [37] "2.5RP" "5RP"   "7.5RP" "10RP" 

munsellinterpol documentation built on April 8, 2022, 9:07 a.m.