*- date
*-http://www.pinggu.org/bbs/thread-945309-1-1.html

clear
input str20 tt
2006-10-13
2006-10-20
2006-10-27
2006-10-6
2006-11-10
end
split tt, p(-) gen(s)
replace s2 = "0"+s2 if length(s2)==1
replace s3 = "0"+s3 if length(s3)==1

gen str20 t2 = s1 + "-" + s2 + "-" + s3
drop s*

gen date = date(t2, "YMD")
format date %tdCCYY-NN-DD

tsset date

gen x = _n+20

twoway connect x date, xlabel(, angle(30))  // 角度可以调整