File: color.id.R

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r-cran-plotrix 3.2-6-1
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color.id<-function(col) {
 c2 <- col2rgb(col)
 coltab <- col2rgb(colors())
 cdist <- apply(coltab, 2, function(z) sum((z - c2)^2))
 colors()[which(cdist == min(cdist))]
}