usehttps://www.stata-press.com/data/r17/dupxmpl duplicatesreport 结果为: .duplicatesreport Duplicatesintermsofallvariables --- copies|observationssurplus ---+--- 1|1980 2|42 --- . 我们的假设得到了支持:198个观测结果是唯一的(每个观测结果只有1个副本),而4个观测结果是重复的(每个观测结果有2个...
Duplicates in terms of all variables (27,116 observations deleted) Variable | Obs Mean Std. dev. Min Max ---+--- cetr | 134 -.0291755 .0130523 -.0681468 0 期刊排版 Panel B of Table 2 shows the economic significance of the baseline results. We calculate the implied effect of PNTR fol...
mvencode _all, mv(0) override 最近合并CHNS两个数据表遇到以下问题,请大家帮忙,我所用的命令是merge m:1 wave commid hhid line using m10wages,但却出现以下提示variables wave commid hhid line do not uniquely identify observations in the using data,我曾尝试加入省份变量或删掉commid,但是仍然不行,我...
S458792 ROBUSTPF: Stata module for robust estimation of production functions with errors in proxy variables byYingyao Hu & Guofang Huang & Yuya Sasaki S458791 NPEIVREG: Stata module for estimation of nonparametric errors-in-variables (EIV) regression and construction of its uniform confidence band...
1. Mata can be used by users who want to think in matrix terms and perform (not necessarily simple) matrix calculations interactively, and 2. Mata can be used by advanced Stata programmers who want to add features to Stata. Mata has something for everybody. Primary features of Mata are th...
S458921 COUNTVALUES: Stata module to list counts of integer values across variables by Nicholas J. Cox S458920 INLIST2: Stata module to create an inlist() dummy, without the inlist() limitations by Matteo Pinna S458919 SONGBL: Stata module to search and share Stata resources and blogs ...
duplicates drop _Stkcd y,force删除反复旳Duplicates in terms of _Stkcd y (42 observations deleted). drop if _n0 & roe wide-Number of obs. 5077 - 2669Number of variables 3 - 3j variable (2 values) y - (dropped)xij variables: roe - roe roe. g right=1 if 0.06roe & roe=0.07|0.06 ...
Duplicates in terms of _Stkcd y (42 observations deleted) . drop if _n<3 删除前两行,_n就是序号的意思 (2 observations deleted) merge 1:1 _Stkcd y using bs1 variables _Stkcd y do not uniquely identify observations in the using data 合并有重复的,在自子数据库 use bs1 ...
---| | 13 6084 467 2002 | +---+. duplicates tag id year, gen(isdup)Duplicates in terms of id year. edit if isdup . drop isdup The finaleditcommand reveals the precise problem: two cities, Royal Oak, MI, and Bristol, CT, have been assigned the same identifier. We need to...
To drop all duplicate observations, including the first occurrence, type . drop if dup>0 Case 3: Identifying duplicates based on all the variables Obviously, one solution would be to treat this as case 1, and simply type the names of all the variables in your dataset. The following is a...