[R] Using the legend function inside a bar chart error.bars function

[Jim Lemon]

Sarah Vandome wrote:
> Hello,
>
> I am just starting out using R on my Uni course. I have been given a function to work with that adds error bars to a bar chart. I want to add a legend and have been trying to amend the code in the function error.bars (see below) so it automatically places a legend on the chart. It does this, but the legend is sitting over the top of one of my data columns. I need the function to decide where best to place the legend, depending on where the chart bar data and error bars are located. Is it possible to do this?
>
>   
Hi Sarah,
The "emptyspace" function in the plotrix package can find the empty 
space on a bar chart, but would need a little modification to avoid 
error bars. You could feed it the bar heights plus the error bars, but 
that might not be automatic enough.

Jim