Convert dates and datetimes in string form to numeric form with great flexibility, including support for any order of year, month, day, hour, minute, second, and millisecond Extract day, day of week, week of year, month, quarter, half-year, or year from specified date Extract hour, minut...
1、encode varname, gen (newvarname)，重新⽣成⼀个新的变量，内容与字符型的相同。2、 Convert string variables to numeric variables：destring [varlist] , {generate(newvarlist)|replace} [destring_options]字符转数值 Convert numeric variables to string variables：tostring varlist , {generate(new...
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...
请看看Stata对encode的说明:encode creates a new variable named newvar based on the string variable varname, creating, adding to, or just using (as necessary) the value label newvar or, if specified, name. Do not use encode if varname contains numbers that merely happen to be stored as s...
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)
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 alocalmacro (scalar variable) use : load a Stata dataset ...
merge : merge datasets (one-to-one or match merge) encode : generate numeric variable from categorical variable recode : recode categorical variable destring : convert string variables to numeric foreach : loop over elements of a list, performing a block of code ...
= 2) { return(198) ; /* syntax error */ } if(rc = SF_scal_use(argv[0],&d)) return(rc) ; /* read scalar */ strcpy(macname,"_") ; /* local macro */ strcat(macname,argv[1]) ; sprintf(buf, "%lf", d) ; /* convert to string */ if(rc = SF_macro_save(macname,...
Title stata.com data management—Introduction to data management commands Description Reference Also see Description This manual,called[D],documents Stata’s data management features.See Mitchell(2010)for additional information and examples on data management in Stata.Data management for statistical ...
...alert( String.fromCharCode(22825, 27668) ); //天气 4、当两个字符串进行大小比较时,比的是第一个字符的unicode编码的大小: alert...( 'abbbbb' > 'b' ); //unicode编码中a '2' );...//unicode编码中1<2,所以是false; 4.9K30 如何在 Python 中反转字符串...