1、Quarterly date from daily date 导入数据,查看数据 use date.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 %tq 2、Quarterly date from monthly ...
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 %tq 2、Quarterly date from monthly date gen month = month(datevar...
S458863 WCBREGRESS: Stata module to estimate a Linear Regression Model with Clustered Errors Using the Wild Cluster Bootstrap Standard Errors byZizhong Yan & Bingkun Lin S458862 ENCODELABEL: Stata module to encode string variable into categorical variable ...
Access largest and smallest possible values of each numeric Stata variable storage type Read contents of file into string Write string to file Check whether file exists Normalize Unicode strings Search for invalid UTF-8 sequences Encode and decode strings and files to and from Base64 format...
recode : recode categorical variable destring : convert string variables to numeric foreach : loop over elements of a list, performing a block of code forvalues : loop over a numlist, performing a block of code local : define or modify a local macro (scalar variable) ...
遇到这种情况可以使用destring [string_var_name],replace force转换为数值型变量 2)如果传入的文件名没有对应拓展名,则假定为.dta格式 二、Syntax 命令语法 1.语法示例 代码如下(示例): One-to-onemerge on specified key variables 通过关键变量进行`一对一`合并 ...
S458924 MYAXIS: Stata module to reorder categorical variable by specified sort criterion by Nicholas J. Cox S458923 XFRAMEAPPEND: Stata module to append data frames to the end of the current data frame by Roger Newson S458922 CIRCULARKDE: Stata module to perform kernel density estimation for ...
SPWMATRIX: Stata module to generate, import, and export spatial weights 32 STDDIFF: Stata module to compute Standardized differences for continuous and categorical variables 33 UTEST: Stata module to test for a U-shaped relationship 34 IVREGHDFE: Stata module for extended instrumental variable regres...
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...
其中,N表示样本数,yi表示y的第i个观察值 。此处,估计量μ^被称为矩估计量( the method of moments estimator ),简称 MM 估计量。这是因为,该估计量的构造以母体矩条件( population moment condition )为基础,进而用其样本矩条件(依赖于我们使用的数据)做等价代换。因为我们从总体矩条件开始,然后运用类比原理得...