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RE: st: RE: Drawing an arrow from textbox to point [Stata 8]


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: Drawing an arrow from textbox to point [Stata 8]
Date   Wed, 18 May 2005 18:29:30 +0100

My fault. I did this in Stata 9.0 and forgot that -lcolor()- 
is new here. The documentation of that change is 
accessible to you at 

http://www.stata.com/help.cgi?whatsnew8to9#graphics

So, for -lcolor()- read -clcolor()-. This works in 8.2: 

sysuse auto
 
scatter mpg weight, text(41 2650 "top car")
         || scatteri 41 2100 41 2500 , clcolor(black) recast(line)
         || scatteri 41 2100 41.3 2200, clcolor(black) recast(line)
         || scatteri 41 2100 40.7 2200, clcolor(black) recast(line)  legend(off)

Nick 
n.j.cox@durham.ac.uk 

Raphael Fraser
 
> Thank you! The example was very helpful. I had only one small problem:
> the -lcolor- option did not work.I recieved the following error
> message
> 
> [option lcolor() not allowed invalid syntax]
 
Nick Cox 

> > Here is a daft example showing one way to build
> > your own arrow as three line segments:
> > 
> > sysuse auto
> > 
> > scatter mpg weight, text(41 2650 "top car")
> >         || scatteri 41 2100 41 2500 , lcolor(black) recast(line)
> >         || scatteri 41 2100 41.3 2200, lcolor(black) recast(line)
> >         || scatteri 41 2100 40.7 2200, lcolor(black) 
> recast(line)  legend(off)
> > 
> > Neat arrows at some orientation other than vertical or horizontal
> > would require some trigonometry. The angle between barb and shaft
> > looks OK to many tastes at about 30 degrees. Stata 9 uses a 
> default of
> > 28.6 degrees, better known as 0.5 radian.
> > 
> > There is more on arrows in Stata 9 in a forthcoming Tip in
> > Stata Journal 5(2).

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