st: Graph png format - differences in scaling between vers. 10 and 11

[Johannes Geyer <JGeyer@diw.de>]

Dear Listers,

I just stumbled across an unexpected behaviour. I updated some graphs for 
a Beamer-Latex presentation. I used the "png" format. But I used Stata 11 
instead of Stata 10. The result was a file smaller than the previous 
version (by a factor of four) with a smaller resolution. I guess, png is 
not a vector format and not indifferent to scaling. So, there is a smaller 
picture with less pixels which looks less nice when its size is increased. 
Even if I use Stata version-control, there is no difference. These new 
graphs look bad in the presentation, so I recreated them using Stata 10. 
There are many workarounds and this is not a big problem  - but is this 
wanted, that the output changes  even when I use version control? And the 
previous default looked better to me. Or did I overlook something?

The code I used was the following:

************************

twoway (scatte v1 v2 t, connect(l l) mlabel(v1 v2) mlabp(12 12) msymbol(D 
O)) (scatte v5 v6 t,  ///
mlabel(v5 v6) mlabp(6 3) msymbol(S T) yaxis(2)), legend(size(small) 
label(1 "S1") label(2 "S2") label(3 "S3") label(4 "S4")) ///
 xlabel(1 "1937-1941" 2 "1942-1946" 3 "1947-1951" 4 "1952-1956" 5 
"1957-1961" 6 "1962-1966" 7 "1967-1971", labsize(small)) ///
ylabel(, labsize(small) axis(1 2)) scheme(sj)  ///
xtitle(Kohorten, size(small) margin(medium)) plotregion(margin(large)) ///
ytitle("XX", size(small) margin(small) axis(1)) ///
ytitle("YY", size(small) margin(small) axis(2)) 

graph export "test.png", replace

************************

Thanks,

Johannes
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