Question regarding legend look

Hi everyone.

I have a quick question regarding the look of my legend in my plot.  
As you
can see in the next figure, I have 3 series.

http://r.789695.n4.nabble.com/file/n3067466/legend.png


However, I find rather difficult to differentiate the series 1 and 3
according to their line type (lty). I would like to know if it was  
possible
to make the line type in the legend to appear more clearly. For  
example, to
give more horizontal space each side of the symbols "square" to have a
better idea of the line type.

The specifics will depend on what plotting function produced the graph  
from which you have given us a bitmap snapshot BUT NOT SHOWN US CODE  
OR SAMPLE DATA. In xyplot you would be working with the key/lines/size  
elements (after showing us which of the several legend options were  
specified):

?xyplot

In base graphics I do not see a "handle" on the line length but  
(perhaps) you could emphasize the line compenent by increasing cex  
which affects all components and at the same time decrease the point  
size. E.g.:

  legend( ..., cex=1.5, pt.cex=0.8, cex=1.5, pt.cex=0.8, ...)

As always____>

PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

__ ___________________________________

David Winsemius, MD
West Hartford, CT