I doubt that any Statalist posts state otherwise. (I wrote tag() in 1999, and I am not aware of this as a misunderstanding.) There is a related but so to speak distinct problem where tag() comes in useful, which is counting distinct values (often called unique values). sysuse auto, ...
这个图实在太丑了,所以参考pandas开发者的做法,咱用 seaborn 包来画: importseabornassnssns.barplot(y=df['折扣'].value_counts().values,x=df['折扣'].value_counts().index)<AxesSubplot:> 这是因为 value_counts 函数返回的是一个 Series 结果,而 pandas 直接画图之前,无法自动地对索引先进行排序,而 sea...
> sure that we store values as they emerge from a -count-: > > local N = _N > gen count = . > qui forval i = 1/`N' { > count if Company_no == Company_no[`i'] & inrange(Date, Date[`i'] > - 365, Date[`i']) > replace count = r(N) in `i' > } > > Excep...
The unique values for each var is 4364 from a total of 25725 observations Nikos * * For searches and help try: *http://www.stata.com/support/faqs/res/findit.html*http://www.stata.com/support/statalist/faq*http://www.ats.ucla.edu/stat/stata/...
To statalist@hsphsun2.harvard.edu Subject st: Count presence of item on different vars Date Mon, 09 Oct 2006 18:04:48 +0300Hi all, I've got a set of variables v6-v146, each one containing string values (unique values ~4500): v6 v7 v8 v9 v10... text1 text1 text3 text45 text...
> sure that we store values as they emerge from a -count-: > > local N = _N > gen count = . > qui forval i = 1/`N' { > count if Company_no == Company_no[`i'] & inrange(Date, Date[`i'] > - 365, Date[`i']) ...
At this stage, individual consent will be elicited, with age, sex, and school-attending status recorded and a unique participant identification number allocated. Selection will proceed until the minimum sample size is achieved. All community members will be invited to receive treatment, with ...