This paper discusses a number of ways to rename variables. Its topics include the RENAME statement used in DATA steps, the RENAME= data set option, the AS keyword for PROC SQL, using macros, and using the DATA _NULL_ step.A “quick and dirty” way to change the name of a variable is...
在data步里面通过merge, set, update语句产生一个变量的时候,sas会自动"Retain"所有衍生变量值。所以容易出现这样的情况:不仅满足条件的那条record result是赋予的新值,而且其他在同一个by group里面的也是这值,你当然不是你想要的。 我们可以用rename在一个data step里...
The variable must be numeric and has the initial value of zero. This statement adds the value of the expression to the variable while retaining the variable’s value from one iteration of the DATA step to the next。 下面两句和sum语句起到的效果一样 retain variable 0; variable = sum(variable...
Ø data mydata(index=(b k) label='label for my data set' drop=p read=secret); Ø data idxdup2(compress=yes index=(ok1 ok2 ssn/unique ok3)); Ø proc print data=new(drop=year); Ø set old(rename=(date=Start_D...
问在SAS中获取多个变量的中位数和第95个百分位数统计信息EN在C语言编程中，获取数组的中位数是一项...
This paper illustrates step by step how to rename and modify attributes of variables using SAS(R) 9.1. The main objectives are: 1) renaming variables; 2) modifying the attribute of variables (i.e. length, format and label); 3) assuming attribute of a variable in specific dataset and ...
reading sas data set SET statement set<sas-data-set<data-set-options>><options>; sas-data-set:specifies namedata-set-optionskeepspecifies variables for processingdrop excludes variablesrename changes the name of a variablewhere selects observations that meet the specified conditionfitstobs = n cause...
Re: Rename Variable with invalid characters in data step Posted 07-21-2015 07:52 AM (10499 views) | In reply to RafaelZ If that is real variable name .Try to Add N at then end of it . options validvarname=any; data Custs_Numerators_Income; options obs=500; set work...
proc freq data= _adsl noprint; table &grpvarn. / out=_bygrpnum0(drop = PERCENT rename = ( count = _count)); proc sort; by &grpvarn.; run; * _2.1.3 all by col; proc freq data= _adsum1 noprint; table &grpvarn. / out= _bycols0(drop = PERCENT ); ...
其实不难,在我刚学SAS的前俩周,我眼里的数据集转置是set、keep、rename,基础吧!Data步里面特别基础的知识!...既然横线转置成纵向,那么纵向在转置回去是不是也可以用这样的最通俗的语句实现呢?是的,见下面的代码!...这是我接触SAS后2周做测试项目,做的实验室转置方式! 写在这里,其实也是要说,转置真的不难...