st: Moving legends in combined graphs

[Nick Winter <nwinter@virginia.edu>]

Hi,

I'm trying to automate a modification to -grc1leg-, to move the single 
legend into a "hole" in the combined plot.  There are two ways I can get 
what I want:


sysuse auto, clear
gr two scatter mpg mpg price, name(a, replace) legend(col(1))

* Way One
grc1leg a a a , ring(0) pos(4) name(drag)
gr_edit .legend.DragBy 21 -15

* Way Two
grc1leg a a a , ring(0) pos(4) name(setmargin)
gr_edit .legend.style.editstyle boxmargin(0 15 20 0) editcopy


So my question is whether anyone can give me advice on automating 
figuring out the amount to drag (method 1) or the size of margins needed 
(method 2) to put the legend in the middle of an arbitrarily specified 
hole in the grid of plots?

Ideally I'd like to be able to do something like:

  grc1leg a a a a a, hole(5) putlegend(5)

Which I can achieve by trial and error with

  grc1leg a a a a a, hole(5) ring(0)
  gr_edit .legend.DragBy 21 0


which moves the legend to the middle of the hole created by the hole() 
option.  But to do that I need to figure out the size of the legend, and 
the size of the hole, I'd guess.

Thanks for any thoughts.

Nick Winter

--
--------------------------------------------------------------
Nicholas Winter                                 434.924.6994 t
Assistant Professor                             434.924.3359 f
Department of Politics                  nwinter@virginia.edu e
University of Virginia          faculty.virginia.edu/nwinter w
S385 Gibson Hall, South Lawn  Map: http://tinyurl.com/uvaSLmap
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