[R] Multiple lines with a different color assigned to each line

John Kane jrkrideau at yahoo.ca
Tue Feb 26 22:49:40 CET 2008


I am not sure if I completely understand but would
something like this work? (not tested)

points(.... col=i)
lines (.... col=i=1)

--- Judith Flores <juryef at yahoo.com> wrote:

> Dear R-experts,
> 
>    I want to assign different colors to groups of
> points, lines and segments in a plot.
> 
>   I have a vector(dat$tx) that is going to have a
> different number of levels every time the user wants
> to plot a set of data. The number of lines is going
> to
> be equal to the number of levels of the vector
> mentioned. 
> 
>     What I have so far is this:
> 
> plot(1,1,type="n")
> for (i in dat$tx) {
> 
>   
> points(summ$timep[summ$tx==i],summ$mn[summ$tx==i])
>    lines(summ$timep[summ$tx==i],summ$mn[summ$tx==i])
> }
> 
> How can I assign different colors to the points and
> lines?
> 
> Thank you in advance for any help,
> 
> Judith
> 
> 
>      
>
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