[R] 2d plotting and colours

[Earl F. Glynn]

"Mulholland, Tom" <Tom.Mulholland at dpi.wa.gov.au> wrote in message
news:33F91FB3FDF42E4180428AC66A5CF30B02D3BAB0 at afhex01.dpi.wa.gov.au...
> Since I was only concentrating on colour issues and not on your specific
problem I was just showing the possibilities.
>
> Does this code help
>
> n <- 5
> par(mfrow = c(2,2))
> palette("default")
> barplot(1:25,col = 1:25)
> palette(rainbow(n))
> barplot(1:25,col = 1:25)
> palette(rgb((0:15)/15, g=0,b=0, names=paste("red",0:15,sep=".")))
> barplot(1:25,col = 1:25)
>
>
> require(cluster)
> x <- runif(100) * 8 + 2
> cl <- kmeans(x, n)
> palette(rainbow(n))
> plot(x, col = cl$cluster)
> abline(h = cl$centers, lty = 2,col = "grey" )
> palette(palette()[order(cl$centers)])
> points(x,col = cl$cluster,pch = 20,cex = 0.4)

Using Windows with R 2.0.1 this looks fine at first.

But when I resize the graphic, copy the graphic to a metafile and paste it
into Word, or go to an earlier graphic and come back using "History", the
colors ae all messed up.  It's as if only the last palette is being used for
all four plots in the figure.  Oddly, if I copy the graphic as a bitmap, the
colors are preseved in the bitmap.  Is this a quirk of my machine or does
this happen for others?

Is it possible that the Windows palette manager is being used (which is such
about obsolete) and that true color graphics are not being used (which is
the easist way to avoid headaches from the Windows palette manager)?

efg