st: Graph axis labelling range

[Nick Winter <nwinter@virginia.edu>]

Hi,

I am trying to create a "range-frame" around a scatterplot (see Tufte, 
Visual Display of Quantitative Information, pp 130-131).  The basic idea 
is that the axis line is drawn only for the range of the data.

I've managed to create it (for the y-axis only in this example) as follows:

. sysuse auto

. graph twoway scatter mpg price || ///
	scatteri 12 -250 41 -250, c(l) msym(none) , ///
	plotregion(margin(l 0  b 0)) yscale(noline) ///
	ylab(12 41, nogrid) xscale(ra(-200 15000)) ///
	legend(off) yscal(ra(10 45))

But this seems like a pretty ugly way to go (and requires some ad-hoc 
tinkering).

I'd have thought that the yscale(noextend) option would get me where I 
want to go, but this command:

. graph twoway scatter mpg price , yscale(noextend)

draws a y-axis that runs from about 15.5 to 26.2.  Not sure why that's 
happening.

Is this something someone has programmed, or on which someone has a 
better approach?

Thanks
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
PO Box 400787, 100 Cabell Hall
Charlottesville, VA 22904

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/