Dear Julia,
Try this:

plot(1:10)
legend("topleft", legend=c("g1", "g2", "g3"),
col=c('black','red','blue'), lty=1,lwd=1.5)

# or

plot(1:10)
legend("topleft", legend=c("g1", "g2", "g3"),
text.col=c('black','red','blue'),ncol=3)


HTH,

Jorge


On Tue, Sep 30, 2008 at 3:03 PM, liujb <liujulia7@yahoo.com> wrote:

>
> Hello,
>
> I have a time series plot drawn using 3 different colored lines, each line
> corresponds to different category group. I'd like to put legends on the
> plot. I am using "legend" to do this, however, I can either specify lty or
> col in legend. Will I be able to do the following in the legend box: a
> solid
> black line then g1, a solid red line then g2, a solid blue line then g3?
>
> plot(g1, ylim=c(0,10))
> lines(g2, col="red")
> lines(g3, col="blue")
> legend(locator(n=1), legend=c("g1", "g2", "g3"), ???)
>
> Thank you very much,
> sincerely
> Julia
>
> --
> View this message in context:
> http://www.nabble.com/Adding-legends-to-a-plot-tp19748373p19748373.html
> Sent from the R help mailing list archive at Nabble.com.
>
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