+string concatenation Stata has many mathematical,statistical,string,date,time-series,and programming functions.See help functions for the basics,and see the Stata Functions Reference Manual for a complete list and full details of all the built-in functions.You can use menus and dialogs to create ...
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...
wboot_op (string)：指定任意选项用于wild bootstrap估计，(例如seed ()、bootcluster ()）；graph_op...
How to Use: generate varname = regexs(section_number)ifregexm(string_variable,"REGULAR EXPRESSION") 案例构建正则表达式: 对于本例,我将使用1 Street Name suburban 2000 STATE的简单地址结构构建一个正则表达式。这里的一般结构是一个数字,后面是一个或多个单词,后面是一个4位数字,最后是2或3个字符的状态...
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...
ASCII character for decimal number Soundex code for string U.S. Census soundex code for string Advanced regular expression functions New Watch Unicode in Stata. Watch How to display text and calculations using Stata 18. Low-level programming functions Updated Access data from linked frames Updated...
2、eb-22H.S.3Stata Macro LanguageFeb-22H.S.4Scalar Scalar (numbers)scalar a=2definedisplay adisplay contentgen x2=a*xuse Will not work in plots Only numbersFeb-22H.S.5Macro Local Macro (number or string)local a=2definedisplay adisplay contentgen x2=a*xuse Global Macro (number or ...
Number of obs 表示Total number of cases (rows) Number of groups Total number of groups (entities) F(1,62) = 5.00,Prob > F如果这个数字< 0.05,那么您的模型就可以了。这是一个检验(F),看看模型中的所有系数是否都不为零。 corr(u_i, Xb) = -0.5468 表...
Number of groups Total number of groups (entities) F(1,62) = 5.00,Prob > F如果这个数字< 0.05,那么您的模型就可以了。这是一个检验(F),看看模型中的所有系数是否都不为零。 corr(u_i, Xb) = -0.5468 表示ui与解释变量的相关性 t值检验各系数为不同于0的假设。要拒绝它,t值必须高于1.96(95%可...
random-number functions——产生随机数的函数 string functions——字符函数 programming functions——编程函数 datetime_functions——有关时间函数,用于时间序列 time-series functions——有关时间函数,用于时间序列 matrix functions——矩阵函数 help egen // egen用于使用函数来产生新变量 ...