Re: [R] How to plot curves with more than 8 colors

From: Uwe Ligges <>
Date: Tue 27 Dec 2005 - 19:20:44 EST

Vincent Deng wrote:
> Hi,
> I'm a new hand in R language. I have about 20 groups of data[x,y] and
> want to plot them on a graph. To do this, I write a for-loop as
> following: (some codes are omitted for simplicity)
> for (i in c(1:20))
> {
> points(...,...,col=i)
> lines(...,col=i)
> }
> The problem is "R only plot them with 8 colors repeatly". Could anyone
> help me solve this problem? Or is there any package providing plot
> function without color limit?

After typing


I get a nice help page that points me to a lot of other functions that generate more than 8 colors. Maybe your installation of R is broken and you cannot see this help page? You certainly tried to get help on colors as well.

There is no limit of the color number in the functions above, simply specify the color you want to get. The only color limit applies for the device and for most devices and rgb colors this is 256^3.

Uwe Ligges

> Best Regards...
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> PLEASE do read the posting guide! mailing list PLEASE do read the posting guide! Received on Tue Dec 27 19:36:53 2005

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