合并 merge 1:1 make using http://www.stata-press.com/data/r14/autoexpense 2、使用 m:1 webuse dollars,clear webuse sforce 此时使用 1:1 merge 1:1 region using http://www.stata-press.com/data/r14/dollars variable region does not uniquely identify observations in the master data...
merge 1:1 make using http://www.stata-press.com/data/r14/autoexpense 2、使用 m:1 webuse dollars,clear webuse sforce 此时使用 1:1 merge 1:1 region using http://www.stata-press.com/data/r14/dollars variable region does not uniquely identify observations in the master data 显示错误 由于 ...
Stata merge 的原理 The formal defifinition for merge behavior is the following: Start with the first observation of the master. Find the corresponding observation in the using data, if there is one. Record the matched or unmatched result. Proceed to the next observation in the master dataset. ...
X2,X5}..Using X1 and X2, we could uniquely identify the individuals in the data...Moreover,the sample size of B is bigger that of A..I only want X5 of individuals in B who are also in A...How could I do this?
To Statalist <statalist@hsphsun2.harvard.edu> Subject st: Merge data Date Fri, 09 Mar 2007 17:18:46 +1100Hi, I've previously merged columns from A.dta to B.dta, but somehow the results of those merged columns are not the same. I'm trying to merge one more time. I can't seem...
merge 1:1 id using data2.dta 根据关键变量 id 将data2.dta 合并到当前数据集中。 list in 1/10 再次显示合并后的数据集的前 10 行,以查看合并结果。4. 检查 Stata merge 1:1 命令的执行结果 合并后,可以通过 _merge 变量来检查合并结果:
merge 1:1 varname using filename 或者 merge 1:m varname using filename 键入help merge查看更详细的解释。
Merge(DataTable) Unisce un DataTable specificato e il relativo schema nel DataSetcorrente. Merge(DataSet, Boolean) Unisce un DataSet specificato e il relativo schema nell'DataSetcorrente, mantenendo o rimuovendo eventuali modifiche apportate in questo DataSet in base all'argomento specificato. ...
mergepoly inputs a shapefile in the dual Stata dataset format generated by -shp2dta- (SSC) and merges adjacent polygons by removing all shared line segment... R Shaffer 被引量: 0发表: 0年 Merge Two Data Tables mergepoly inputs a shapefile in the dual Stata dataset format generated by ...
merge 1:1 Stkcd year using pdata2.dta, nogen save finaldata, replace 请问Stata用什么命令提取字符串变量前2个汉字或前n个汉字? 一个汉字占3位。 g x=substr(province,1,6) 解决stata15中文乱码的问题 cd D:\stata15\ado\personal\mypaper * Unicode all .dta files in CWD and files in sub-dire...