destring String,gen(Str2Num)tostring Number,gen(Num2Str) 初学者总是容易将destring和encode混淆,其实两者的用途是有区别的: destring: Convert string variables to numeric variables and vice versa. encode: Encode string into numeric and vice versa. encode主要用于将数据进行编码、分组,将连续性变量转换成分组...
How can I see the number of missing values and patterns of missing values in my data file? How can I quickly recode missing values into different categories? How can I use multiply imputed data where original data is not included? String variables How can I quickly convert many string variab...
Stata日期和时间处理指南说明书 in Stata Gabriela Ortiz Applied Econometrician StataCorp LLC 1
. . . . Increase the number of observations in dataset [R] reshape . . . . . . . . . . . . . . . . . . . . . . . . . . Convert data from wide to long and vice versa [R] separate . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
lookfor -- Search for string in variable names and labels 面板数据中,根据样本(id)和观测期(t)生成一个新变量number,其内容是每个样本的观测期个数, inp id t 1 1991 1 1992 1 1993 2 1991 2 1992 3 1991 end *方法一: bys id: g number=_N *方法二: duplicates t id, g(number...
I tried: >>> tostring dx, gen(dx2) force >>> >>> this gives a string value, but it looks like this: >>> 1.25556e+12 >>> >>> I'm using Stata 11.2, I've tried to search for a solution to get my data into numeric format so that I can convert to a sensible date format....
datetime/c and datetime/C Determining when leap seconds occurred The date() function The other conversion functions Introduction The conversion functions are used to convert string dates, such as 08/12/06, 12-8-2006, 12 Aug 06, 12aug2006 14:23, and 12 aug06 2:23 pm, to Stata dates. ...
Stata数据管理—数据管理命令简介说明书 Title stata.com Data management—Introduction to data management commands Description References Also see Description This manual,called[D],documents Stata’s data management features.See Mitchell(2020)for additional information and examples on data management in Stata....
lookfor -- Search for string in variable names and labels 面板数据中,根据样本(id)和观测期(t)生成一台新变量number,其内容是每个样本的观测期个数, inp id t 1 1991 1 1992 1 1993 2 1991 2 1992 3 1991 end *方法一: bys id: g number=_N *方法二: duplicates t id, g(number...
SavedatainExcelasan.xmlfileTypeCommand:.xmlusefilename→importsfile.xmlusefilename,firstrow→makesfirstrowvariablenames.xmlusefilename,firstrowallstring→importsalphastrings.destringfilename,replace→ConvertsstringstonumericdataSaveasa.dtafile.savefilename ImportingDataAfewmorethings:.clear→removesanydatayou...