(n,"马其顿") merge 1:1 n using 国家地区法系数据集2, nogen keep(3) keep C code3 ren c CountryCode save A3, replace * use A2, clear merge m:1 CountryName using A3, nogen keep(3) merge m:1 CountryCode y using A1, nogen keep(3) destring Stkcd, force replace order Stkcd year...
merge m:1 Prov2 using 社会信任_时不变, nogen keep(1 3) keepus(社*) order P* y *1 *2 *3 *4 *5 *6 *7 *8 cor 社* order Prov2 y sort Prov2 y save 社会信任_全部, replace 得到: |社会信~1社会信~2社会信~3社会信~4社会信~5社会信~6社会信~7社会信~8 ---+--- 社会信任...
merge 1:1 Stkcd year using "目录路径\数据.dta",keep(1 3) nogen 判断字符串有没有包含特定字符,例如筛选出年报,则日期要包含‘12-31’: keep if strmatch(var, "*12-31*") 把类型转换成int: recast int Year 排序(sort,gsort): sort命令:在STATA中对观测值(行)根据特定变量进行升序排序。 gsort...
merge 1:m Ind year using Type111 ,nogen keep(3) *非操控性应计利润_McNichols模型 gen NDA=_b_A*_A+_b_dREVC_A*dREVC_A+_b_PPE_A*PPE_A+_b_CFO_1_A*CFO_1_A+_b_CFO_A*CFO_A+_b_CFO1_A*CFO1_A *操控性应计利润_McNichols模型 gen DA=WCA_A-NDA *盈余管理程度 gen absDA=abs...
将此结果与merge m:m结果进行对比,在merge m:m结果中,我们指定keep(match)来模拟joinby的默认情况,即排除不匹配的观察结果。 use parent, clear (Data on Parents) . . merge m:m family_id using child, nogen keep(match) Result# of obs.
merge (变量名) using (文件名), keep((变量名)) [第一台变量名即为前面sort后面的变量名,文件名是辅助数据库的名字,后面的变量名是希望提取的变量名] ta _merge [显示_merge的取值情况。_merge等于1的观察是仅主库有的,等于2的是仅辅助库有的,等于3是两个库都有的。] drop if _merge==2 [删除仅仅...
gini keepnegXXX (+) indicates the function has the same or a very similar name to a function in the "egenmore" packge, but the function was independently implemented and is hence analogous to its gcollapse counterpart, not necessarily the function in egenmore. ...
*为观测值加标签Definevalue labellabeldefine lblname # "label" [# "label" ...] [, add modify replace nofix] *7、升序降序 sortvarlist [in] [, stable]*案例sysuseautokeepmake mpg weightsortmpghelpgsortgsort[+|-] varname [[+|-] varname ...] [, generate(newvar) mfirst] ...
keep : keep only certain variables and/or observations append : combine datasets by stacking merge : merge datasets (one-to-one or match merge) encode : generate numeric variable from categorical variable recode : recode categorical variable ...
keep state2 statastates, abbreviation(state2) nogen replace state_name = strproper(state_name) 18.使用 bysort 时,假设你有一个要排序的变量,但不是group by什么。此时,将此变量放在括号中: sysuse census, clear *保留每个区域内人口最少的州,因此按每个区域内的人口排序: ...