plotLociHC | R Documentation |
Plot Curves of Constant Munsell Hue and Chroma
plotLociHC( value=5, hue=seq(2.5,100,by=2.5), chroma='auto', coords='xy', main="Value %g/", est=FALSE, ... )
value |
a Munsell value for which the plot is created.
It must be in the interval (0,10].
|
hue |
a numeric vector for which curves of contant Hue are plotted.
Each of these radial curves starts at Munsell Chroma = |
chroma |
a numeric vector for which ovoids of constant Chroma are plotted.
Each of these ovoids is closed; i.e. goes full circle from Hue=0 to Hue=100.
If |
coords |
either |
main |
a string used to set the main title of the plot.
The optional placeholder |
est |
if |
... |
other arguments passed to the function |
The plot limits (xlim
and ylim
) are set to include
all points where the Hue radials intersect the Chroma ovoids,
plus the white point.
If value
is one of 0.2,0.4,0.6,0.8,1,2,3,4,5,6,7,8,9,10
then published points from real.dat
are plotted with filled black points (real points),
and extrapolated points from all.dat
are drawn with open circles (unreal points).
TRUE
for success and FALSE
for failure.
The option hcinterp='bicubic'
makes fairly smooth ovoids,
and hcinterp='bilinear'
makes 40-sided polygons (when coords='xy'
).
Compare with the plots in
Newhall et. al. (1943),
Judd, et. al. (1956),
and Judd, et. al. (1975) p. 263.
Glenn Davis
Newhall, Sidney M., Dorothy Nickerson, Deane B. Judd. Final Report of the O.S.A. Subcommitte on the Spacing of the Munsell Colors. Journal of the Optical Society of America. Vol. 33. No. 7. pp. 385-418. July 1943.
Judd, Deane B. and Günther Wyszecki. Extension of the Munsell Renotation System to Very Dark Colors. Journal of the Optical Society of America. Vol. 46. No. 4. pp. 281-284. April 1956.
Judd, Deane B. and Günther Wyszecki. Color in Business, Science, and Industry. 3rd edition. John Wiley & Sons. 1975.
MunsellToxyY()
,
HueNumberFromString()
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