Legend placement in barplot?
On Wed, 3 Nov 2004, Marc Schwartz wrote:
On Wed, 2004-11-03 at 09:55, Dan Bolser wrote:
This has been asked before, but all the answers are hidiously complex. The legend.text=TRUE option of barplot is almost exactly what I need, except I need a legend.placement='tl' (top left) option. This option would be in contrast to the default placement which we could call 'tr' (top right). Anyone know how to edit the barplot code to make this change? Could someone like me work out how to do this? Cheers, Dan.
Dan, Do not edit the barplot() code. Use the legend() function instead, which enables you to specify the x,y coordinates of the upper left hand corner of the legend box. See ?legend
Thing is I need to pass legend the correct groups and correct plotting colors and correct XY position relative to my data. All these things are already known by the barplot function, and used to draw a beautiful legend. The fact that this legend can only appear in the upper right hand corner is surly a bug worthy of changing the code for?
A fair number of the questions that you have had regarding graphics are covered in Chapter 12 "Graphical Procedures" in "An Introduction to R": http://cran.r-project.org/doc/manuals/R-intro.pdf which is included with the R installation. Another online resource for some graphics assistance would be R News Volume 3 Number 2 for October 2003, which has an article on R's base graphics in the R Help Desk section: http://cran.r-project.org/doc/Rnews/Rnews_2003-2.pdf
Thanks for the links
Notwithstanding all of that, searching the r-help archives is yet another terrific online (and free) resource that you _should_ avail yourself of.
Quoting me... "This has been asked before, but all the answers are hidiously complex."
HTH, Marc Schwartz