R help - Feb 2003 - Legend in plot: symbol for mean and standard deviation

Dear list,

I am facing the following problem with the legend of a plot that display
the mean and variance of a measurement y as a function of x, the mean
being represented by a dot and the variance by a vertical line.

My problem is that I am unable to display the symbol (dot + vertical
line) in the legend. 


any help is welcome,
thanks
marco
-- 
____________________________________________________________________________

Marco Kienzle
Fisheries Research Services
Marine Laboratory
PO Box 101 Victoria Road
Aberdeen AB119DB
United Kingdom
 
direct: +44 (0) 1224 295421
tel:    +44 (0) 1224 876544 
fax:    +44 (0) 1224 295511
http://www.marlab.ac.uk

Marco Kienzle wrote:
> 
> Dear list,
> 
> I am facing the following problem with the legend of a plot that display
> the mean and variance of a measurement y as a function of x, the mean
> being represented by a dot and the variance by a vertical line.
At least for me the latter does not appear to be "that common" ...
> My problem is that I am unable to display the symbol (dot + vertical
> line) in the legend.
> 
> any help is welcome,
> thanks
> marco

Does the following do what you are looking for?

  legend(..., c("y.", "y|"))
or
  legend(..., expression(y[.], y["|"]))


Uwe Ligges

Dear list,


I attached to this mail an eps file containing an example that illustrate the
problem: the
plot display dot+vertical lines while with the legend I am able only to
display dot+horizontal line.

Any help is appreciate,

cheers,
marco

On Mon, 2003-02-24 at 17:51, Uwe Ligges wrote:
> Marco Kienzle wrote:
> > 
> > Dear list,
> > 
> > I am facing the following problem with the legend of a plot that
display
> > the mean and variance of a measurement y as a function of x, the mean
> > being represented by a dot and the variance by a vertical line.
> 
> At least for me the latter does not appear to be "that common"
...
> 
> > My problem is that I am unable to display the symbol (dot + vertical
> > line) in the legend.
> > 
> > any help is welcome,
> > thanks
> > marco
> 
> 
> Does the following do what you are looking for?
> 
>   legend(..., c("y.", "y|"))
> or
>   legend(..., expression(y[.], y["|"]))
> 
> 
> Uwe Ligges
-- 
____________________________________________________________________________

Marco Kienzle
Fisheries Research Services
Marine Laboratory
PO Box 101 Victoria Road
Aberdeen AB119DB
United Kingdom
 
direct: +44 (0) 1224 295421
tel:    +44 (0) 1224 876544 
fax:    +44 (0) 1224 295511
http://www.marlab.ac.uk
-------------- next part --------------
A non-text attachment was scrubbed...
Name: graph.eps
Type: application/postscript
Size: 4524 bytes
Desc: 
Url :
https://stat.ethz.ch/pipermail/r-help/attachments/20030225/a9e83d0d/graph.eps

You can specify that no plot character is drawn using pch = -1. 

Maybe this is what you want:

plot(1:10,1:10)
legend(locator(1),c("blah","blahblah","blahblahblah","blah..."),
 pch =
c(-1,-1,22,22),lty=c(1,1,0,0),col=c("green","red","blue","blue"),
 pt.bg=c("white","white","yellow","orange"))
 


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Anne E. York
National Marine Mammal Laboratory
Seattle WA 98115-0070  USA
e-mail: anne.york at noaa.gov
Voice: +1 206-526-4039
Fax: +1 206-526-6615
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



Date: Mon, 24 Feb 2003 18:51:35 +0100
From: Uwe Ligges <ligges at statistik.uni-dortmund.de>
To: Marco Kienzle <m.kienzle at marlab.ac.uk>
CC: r-help at stat.math.ethz.ch
Subject: Re: [R] Legend in plot: symbol for mean and standard deviation



Marco Kienzle wrote:
> 
> Dear list,
> 
> I am facing the following problem with the legend of a plot that display
> the mean and variance of a measurement y as a function of x, the mean
> being represented by a dot and the variance by a vertical line.
At least for me the latter does not appear to be "that common" ...
> My problem is that I am unable to display the symbol (dot + vertical
> line) in the legend.
> 
> any help is welcome,
> thanks
> marco

Does the following do what you are looking for?

  legend(..., c("y.", "y|"))
or
  legend(..., expression(y[.], y["|"]))


Uwe Ligges