R help - Jul 2011 - Colors in R

HI everyone,
I''m trying to assign colors to multiple lines in a graph. Problem is I
don''t want to type in as many colors as there are lines....is there a
way around this? In brief, I''m plotting the logratio for up to 60
samples and want a different color for each sample.  Here is the code
I''m using now..

Any help is greatly appreciated..

Best

LT

data <- read.table("data.csv", header=T, sep=",",
stringsAsFactors= F)

data$Pt <-as.numeric(data$Pt)
npts <- unique(data$Pt)

xrange = c(min(data$Coordinate), max(data$Coordinate))
yrange = c(min(data$Log2Ratio), max(data$Log2Ratio))



 colors
<-c("red","blue","green","darkmagenta","darkgreen","darkorange","darkred","gold","midnightblue","seagreen1","tomato","slateblue","violet","purple4","palegreen","darkviolet","forestgreen","firebrick"...up
to 60 colors)

labels <- c(''a'',''b'',
''c'', ''d'', ''e'', up to 60
labels)

#add lines
for (i in 1:length(npts)) {
     color=colors[i]
     pt = data[data$Pt==npts[i],]; plot(pt$Coordinate, pt$Log2Ratio,
type="l", lty=3,col=color, xlim=xrange, ylim=yrange); par(new=T)}

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> I'm trying to assign colors to multiple lines in a graph. Problem is
> I don't want to type in as many colors as there are lines....
You'll find your answer over the ?rainbow, I bet.

cur
-- 
Curt Seeliger, Data Ranger
Raytheon Information Services - Contractor to ORD
seeliger.curt@epa.gov
541/754-4638

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may be this is of some help

http://research.stowers-institute.org/efg/R/Color/Chart/
_____________________________________________________ 

Arun Kumar Saha, FRM 
QUANTITATIVE RISK AND HEDGE CONSULTING SPECIALIST 
Visit me at: http://in.linkedin.com/in/ArunFRM
_____________________________________________________



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Trevino, Lisa <lt2 <at> bcm.edu> writes:
> I'm trying to assign colors to multiple lines in a graph.
>  Problem is I don't want to type in as many colors as
> there are lines....is there a way around this? In brief, 
> I'm plotting the logratio for up to 60 samples and
> want a different color for each sample.  
  See my answer to 

  http://stackoverflow.com/questions/6075140/
in-r-how-do-i-change-the-color-value-of-just-one-value-
in-ggplot2s-scale-fill-br/6076605#6076605

  (line-broken URL to make Gmane happy: reassemble it)

 The bottom line is that you *can* do this, but you will 
also have to live with the fact that you will not actually be
able to distinguish among the colours unless you are superhuman
and using a very good output channel ...