R help - Apr 2010 - Unwanted boxes in legend

Dear all,

I am using the following code to generate a legend in my plot (consisting of
both bars and points), but end up with boxes around my points:

legend(10, par("usr")[4], c("A", "B",
"C", "D"), fill=c(NA,NA, "grey28", NA),
pch=c(16,4,NA,18),
col=c("red","blue","grey28","yellow"),
lty=FALSE, bty="n", horiz=FALSE)

I want a box around the third element of the legend (to represent the bar
'fill' colour), but not for the others, where points are shown instead.

What am I doing wrong above and how do I correct it?

Many thanks,

Steve

On 2010-04-15 11:10, Steve Murray wrote:
>
> Dear all,
>
> I am using the following code to generate a legend in my plot (consisting
of both bars and points), but end up with boxes around my points:
>
> legend(10, par("usr")[4], c("A", "B",
"C", "D"), fill=c(NA,NA, "grey28", NA),
pch=c(16,4,NA,18),
col=c("red","blue","grey28","yellow"),
lty=FALSE, bty="n", horiz=FALSE)
>
> I want a box around the third element of the legend (to represent the bar
'fill' colour), but not for the others, where points are shown instead.
>
> What am I doing wrong above and how do I correct it?
Add the 'border' argument:

either

  border = FALSE  # in which case no box is drawn for any element

or

  border = c(NA, NA, "black", NA)

  -Peter Ehlers
>
> Many thanks,
>
> Steve
>   		 	   		
>
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-- 
Peter Ehlers
University of Calgary