1、Quarterly date from daily date 导入数据,查看数据 usedate.dtadesced 可以发现Date2 is a string date variable 然后进行转换 gen datevar=date(date2,"MDY", 2099)format datevar %tdgen quarterly = qofd(datevar)format quarterly %
How can I turn a string variable containing dates into a date variable Stata can recognize? How can I extract a portion of a string variable using regular expressions? Error messages How can I handle the matsize too small error? How can I handle the No Room to Add Observations error? How...
Stata日期和时间处理指南说明书 in Stata Gabriela Ortiz Applied Econometrician StataCorp LLC 1
clear input str10 String Number"1"1"2"2"3"3"4"4end*导致问题**1.条件筛选 dropifString=="1"//字符型dropifNumber==1//数值型/* 字符型数据要加上引号 */**2.运算 gen Add=String+Number/* type mismatch r(109); */gen Number_2=Number gen Add=Number+Number_2//数值运算gen String_2=...
String functions help string functions 1. 实例:股利分配数据(第一列为发布时间,第二列为数额),需要将时间变量切割为年月日。 实现思路:使用tostring命令将数字转化为文字,再进行切割。 use tostring2.dta, clear tostring date_pub,gen(date1) // 数字--》文字 ...
. . . . Change string variables to numeric [R] encode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Encode string into numeric and vice versa [R] generate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
string variable ignored test1: 4 missing values generated test2: 4 missing values generated dis_date: string variable ignored admit_year: string variable ignored admit_month: string variable ignored admit_day: string variable ignored new: string variable ignored ** 再用 misstable summarize 命令查看 ...
20000708$7,233.447233.4486%d/注意到price2和percent2均变为数据值型变量double和byte *3.3.2数值型转化为字符型:tostringwebusetostri ng, clear/*该数据中年月日的数据类型不一样,不能直接相加生成一个反映日期的新变量*/des/注意到mo nth为字符型,而年和日为数值型listgen date仁month+” 19、”+day+...
Date and time functions Complete suite of functions for manipulating dates and datetimes, including support for business calendars and leap seconds Convert dates and datetimes in string form to numeric form with great flexibility, including support for any order of year, month, day, hour, minute...
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....