From: Vincent Deng <bioflash_at_gmail.com>

Date: Wed 28 Dec 2005 - 13:48:24 EST

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Dec 28 13:56:44 2005

Date: Wed 28 Dec 2005 - 13:48:24 EST

Hi,

On 12/27/05, Uwe Ligges <ligges@statistik.uni-dortmund.de> wrote:

> Vincent Deng wrote:

*>
**> > Dear Uwe,
**> >
**> > Sorry, I did not describe my question clearly. I created a matrix to
**> > store color code using rgb function.
**> >
**> > abc = rgb(6:36,0,0,maxColorValue = 255)
**> >
**> > And after running codes like this
**> >
**> > for (i in c(1:20))
**> > {
**> > points(...,...,col=abc[i])
**> > lines(...,col=abc[i])
**> > }
**> >
**> > R still used 8 colors of abc color codes repeatedly to draw the diagram
**> >
**> > Any helps?
**>
**>
**> No, it does not (in fact, all appears to be more or less black on my
**> screen ;-)). Another example:
**>
**> plot(1:255, col=rgb(1:255,0,0,maxColorValue = 255))
**>
**> Uwe Ligges
**>
**>
**>
**> > Best Regards...
**> >
**> > On 12/27/05, Uwe Ligges <ligges@statistik.uni-dortmund.de> wrote:
**> >
**> >>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
**> >>
**> >> ?colors
**> >>
**> >>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...
**> >>>
**> >>>______________________________________________
**> >>>R-help@stat.math.ethz.ch mailing list
**> >>>https://stat.ethz.ch/mailman/listinfo/r-help
**> >>>PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
**> >>
**> >>
**>
**>
*

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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Dec 28 13:56:44 2005

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