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
time is a string variable 因此我们如果要在Stata中处理时间变量,第一件事就是要把文本格式的时间,转换成Stata可以识别的格式。转换的命令叫做date,其格式是: date(s1,s2),其中s1是文本格式的时间变量,s2是文本格式时间的年月日的排列次序 比如说,例子中的1987-01,就是YM,如果是1987-01-01,那就是YMD。如果...
通过date函数进行转换,再通过format指定显示格式。 *第一步,用过date函数将字符串型的日期变量,转换为真正的日起变量 gen date1 = date(date, "YMD") *第二步,通过format命令,改变date1日期型变量的显示格式 format date1 %td 四、其它:季度和月度变量 季度变量,通过quarterly函数进行转换,再通过format指定显示...
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...
To convert the above date variable to an elapsed date format, you must first convert the numeric variable to a string and then use thedate()function. For example, . tostring datevar, replace format(%20.0f)datevar was long now str8. replace datevar = "0" + datevar if length(datevar)...
name type format label Variable label --- patid byte %9.0g Patient ID dateofbirth str9 %9s Date of birth reason str15 %15s Reason for visit admit_d str8 %9s Admission date admit_t str17 %17s Admission date and time discharge_d str9 %9s Discharge...
name type format label Variable label --- patid byte %9.0g Patient ID dateofbirth str9 %9s Date of birth reason str15 %15s Reason for visit admit_d str8 %9s Admission date admit_t str17 %17s Admission date and time discharge_d str9 %9s Discharge...
尝试绘制图表时，Stata会报错提示“string variables not allowed in varlist; time is a string variable”。因此，处理时间变量的第一步是在Stata中将其从文本格式转换为可识别格式，使用`date`命令实现，格式为`date(s1, s2)`，其中`s1`为文本格式的时间变量，`s2`为年月日排列顺序，如`YM`表示...
Stata日期和时间处理指南说明书 in Stata Gabriela Ortiz Applied Econometrician StataCorp LLC 1
2. The new variable needs to be formatted One detail you need to take care of yourself is attaching a dateformatto the new last date variable. That is, the new date variable does not inherit the format of the variables from which it is calculated. Thus for a format%tdd_m_y, type ...