[R] how to write legend of a plot

[John Kane]

There is no simpler way. It's not automatic but it is fairly simple at the most basic. It can get a bit complicated later.


ltxt <- c("cat","dog")

x <- 1:5
y <- 1:5

plot (x,y, type='n', ann=FALSE)
lines(x,y,col=1,lty="solid")
points(x,y,pch=16)

legend(1,4,ltxt, pch=16)


--- On Thu, 7/22/10, Yogesh Tiwari <yogesh.mpi at googlemail.com> wrote:

> From: Yogesh Tiwari <yogesh.mpi at googlemail.com>
> Subject: [R] how to write legend of a plot
> To: "r-help" <r-help at stat.math.ethz.ch>
> Received: Thursday, July 22, 2010, 6:17 AM
> Dear R Users,
> If we issue simple plot command in R we don't get legend of
> the plot
> automatically.
> 
> For example, following lines plots two curves, but to write
> a legend of
> these two curves there is no simple command. I checked with
> ?legend  but
> it seems bit complicated for me. Does anyone know how to
> get a legend in a
> simple way for following R plot.
> Thanks, Yogesh
> 
> 
> 
> >plot (x,y, type='n', ann=FALSE)
> >lines(x,y,col=1,lty="solid")
> >points(x,y,pch=16)
> >
> >points (x,y1, type='n', ann=FALSE)
> >lines(x,y1,col=1,lty="solid")
> >points(x,y1,pch=21)
> 
> 
> 
> -
> 
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> 
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