I think you might need to go a long way round and use
-twoway__histogram_gen- followed by -string(,)- to create a 
string variable that you could use as marker labels. On the face of it,
a   -format()- option or suboption would seem natural in this context. 
On the general point, I quite often do something similar (although I
usually then also suppress a magnitude scale, which is then
unnecessary). 
With -tabplot- from SSC you can do this: 
. sysuse auto, clear 
. gen one = 1
. tabplot one rep78, showval(format(%9.2f) offset(0.02))  
	percent ytitle("") ysc(off)
-tabplot- won't let you put values at the top of bars, but the code
shows that the problem is programmable. 
Nick 
[email protected] 
Ronan Conroy
A colleague was producing some bar charts using -histogram-, using  
the -addlabel- option to add the actual values at the top of each  
bar. (I find this a futile exercise, but some folks like it.)
He found that his labels were being added with two or even three  
places of decimals. For the life of me I cannot find how to use the - 
histogram- graph dialogue to control the display format. Can it be done?
P    Before printing, think about the environment
=================================
Ronan Conroy
[email protected]
Royal College of Surgeons in Ireland
Epidemiology Department,
120 St Stephen's Green, Dublin 2, Ireland
+353 (0)1 402 2431
+353 (0)87 799 97 95
http://www.flickr.com/photos/ronanconroy/sets/72157601895416740/
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