ftools
Fast Stata commands for large datasets. 公卫百科
ftools, written by Sergio Correia, includes commands such as
fcollapse for creating datasets of summary statistics, fmerge
for merging datasets with one-to-one or many-to-one matching, and
flevelsof for identifying distinct levels of a variable. The
ftools suite also includes a Mata class for working with factors.
The Stata commands in ftools are based on this Mata class. You
can use it to implement your own commands too.
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安装
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cap ado uninstall ftools ssc install ftools公卫论坛
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