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 <[EMAIL PROTECTED]> 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 >> >> ______________________________________________ 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