Solved: Hi , I wrote the following code; data want; set have; if apple=1 and peach=0 then fruit=1; else if apple=1 and peach=1 then fruit=2; run;
SAS不能直接识别的数据文件称之为外部文件,外部文件一般用于储存数据。 外部文件一般用来储存以下内容: 要读入SAS数据文件的原始数据; SAS程序语句 过程步输出 2.1.3 DNMS文件 SAS软件可以和其他数据库产品进行数据文件转换。比如数据文件方面使用最广泛的DBMS(database management system)数据库系统文件。 2.1.4 SAS语...
· If the first character of string is a single quotation mark, the DEQUOTE function removes that single quotation mark from the result. DEQUOTE then scans string from left to right, looking for more single quotation marks. Each pair of consecutive, single...
mouse=_n_; if length<=2 then do;group='A';output a;end; else if 3<=length<=4 then do;group='B';output b;end; else if 5<=length<=6 then do;group='C';output c;end; else do;group='D';output d;end; run; data aa; set a...
那么将回归程序写成一个宏，每次用的时候换参数就可以了。 总之，宏可以降低重复性工作的任务量，使程序...
if a and b then output results.match08; else output results.nomatch08; 使用class的时候前三个都是固定参数.一个是class 一个是n 一个是var 最上面的是by,第一列是var 下面这种题就是每一条语句要考虑一次变量的值,一条一条过,否则就有可能出错. ...
Statements in PROC IML Control Statements § IFTHEN/ELSE § DO/END § Iterative DO § START/FINISH (User defined IML subroutines) Copyright © 2006, SAS Institute Inc. All rights reserved. Statements ...
Using %IF-%THEN-%ELSE in SAS Programs Introduction to the SQL Procedure Comparing PROC SQL with the SAS DATA Step PROC SQL - Joining Two Tables Recoding Values Recoding Ranges of Values Analyzing and Reporting on Your Data Overview: FREQ Procedure Example: One-Way Frequencies of Unit Sales ...
%macro isNull(val); %* check if input value is null; %if %nrbquote(&val) ne %then FALSE; %else TRUE; %mend isNull; %put %isNull(a+b); ** correct; === FALSE %macro isNull2(val); %* check if input value is null; %if %str(&val) ne %then FALSE; %else TRUE; %mend ...
IF SEX = 1 THEN GENDER = 'MALE'; ELSE IF SEX = 2 THEN GENDER = 'FEMALE'; The length of GENDER in the two lines above is 4, since the statement in which the variable first appears defines its length. There are several ways to make sure a character variable is assigned the proper ...