如何按国家给公司分组,group不能与by连用
7 个回复 - 5723 次查看
by country: egen company=group(Companyname)
egen ... group() may not be combined with by
r(190);
bysort country: egen company=group(Companyname)
egen ... group() may not be combined with by
r ...
2015-3-23 16:06 - 天斯吾下 - Stata专版