colornames.R
In Polychrome: Qualitative Palettes with Many Colors

## -----------------------------------------------------------------------------
library(Polychrome)

## -----------------------------------------------------------------------------
data(alphabet)

## ----fig.width=7, fig.height=5------------------------------------------------
swatch(alphabet)

## ----manycolors---------------------------------------------------------------
cn <- colorNames(alphabet) # from UNIX rgb.txt file
cc <- isccNames(alphabet) # standards from the Inter-Society Color Council
xk <- xkcdNames(alphabet) # from the  xkCd online color survey
df <- data.frame(UNIX = cn, ISCC = cc, XKCD = xk)
rownames(df) <- names(alphabet)
df

## ----dups---------------------------------------------------------------------
apply(df, 2, function(X) length(unique(X)))
dupn <- df$ISCC[duplicated(df$ISCC)]
tmp <- df[df$ISCC %in% dupn,]
tmp[order(tmp[,2]),]

## ----fig.width=12, fig.height=12----------------------------------------------
data(xkcd)
data(iscc)
colMat <- col2rgb(colors())
opar <- par(mfrow = c(2,2))
unix <- rgb(red = colMat[1, ]/255, green = colMat[2, ]/255, blue = colMat[3, ]/255)
uvscatter(alphabet, xlim = c(-80, 160), ylim =c (-130, 125))
uvscatter(iscc$Hex, xlim = c(-80, 160), ylim =c (-130, 125), main = "ISCC")
uvscatter(unix, xlim = c(-80, 160), ylim =c (-130, 125), main = "UNIX")
uvscatter(xkcd$Hex, xlim = c(-80, 160), ylim =c (-130, 125), main = "XKCD")
par(opar)