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Re: st: Help with superscript in graphs


From   Alan Riley <[email protected]>
To   [email protected]
Subject   Re: st: Help with superscript in graphs
Date   Thu, 10 Dec 2009 13:23:20 -0600

Ricardo Ovaldia <[email protected]> asked a question about the
positioning of a superscript in graph text:

> I want to include the r-square value in a graph inside the plot area:
> 
> When I specify the option:
> 
> text(25  12 "r{superscript:2} =  0`r2'"
> 
> I get the desired result except that the superscript is too far above the “r”. How do I get the superscript to be closer to the “r”
> 
> Here is an example using the auto data.
> 
> sysuse auto, clear
> regress mpg price
> local r2= round(e(r2),.0001)
> graph twoway  (scatter mpg price) (lfit mpg price) , legend(off) text(35  13000 "r{superscript:2} = `r2'")


Nick Cox ([email protected]) showed how the behavior changes as the
vertical alignment of the text changes:

> sysuse auto, clear
> regress mpg price
> local r2 : di %04.3f e(r2)
> graph twoway  (scatter mpg price) (lfit mpg price) , legend(off) text(35  13000 "r{superscript:2} =  `r2'", alignment(bottom))


The behavior Ricardo reported is a bug.  Text with the vertical
-alignment()- set to "top" or "middle" will have superscripts and subscripts
appear slightly too high or too low.  Text with the vertical -alignment()-
set to "baseline" or "bottom" will have superscripts and subscripts in
the correct position.

This will be fixed in a future update.  In the meantime, use
-alignment(bottom)- as Nick showed or -alignment(baseline)- as
a workaround.


Alan
([email protected])
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