2. When you reference a macro variable in a SAS program, SASreplaces the reference with the text valuethat has been assigned to that macro variable. By substituting text into programs, SAS macro variables make your pr...
len : optional. Set the length of string variablesuniformly. the defaultis 12000; *** *** MODIFICATIONS: *** Programmer *** Date: *** Reason: *** ***/ /*%let len=12000;*/ /*%let dataset=ae2_;*/ %macro ms_char_set_len(dataset=%str(td1), len=%str(12000)); /*create ...
Re: Variables list used in macro Posted 04-30-2015 10:55 AM (1044 views) | In reply to Ujjawal If the output you show is in a dataset then: proc sql noprint; select variables into : vars separated by ' ' from <your dataset with the variables>; quit; Will create a space separ...
CALL SET Routine Links SAS data set variables to DATA step or macro variables that have the same name and data type. CALL VNAME Routine Assigns a variable name as the value of a specified variable. 算术函数 Arithmetic DIVIDE Returns the result of a division that handles special missing values...
%macro process_array(data=, varlist=); %put Processing data: &data; %put Variables to process: &varlist; data &data; set &data; array vars[*] &varlist; do i = 1 to dim(vars); vars[i] = vars[i] * 2; end; run; %mend process_array; ...
1. Thetext optionincludes both literal text and references to macro variables. 2. Thenext fiveoptions are keywords that list different classifications of macro variables. 3. Thelast threeoptions are keywords that can simulate color-coded SAS messages. The ‘…’ represents the text that you want...
1.1：Automatic Macro Variables (⽤来创建脚注⼗分好)Automatic macro variables contain information about your computing environment, such as the date and time of the session, and the version of SAS you are running.性质：sas系统启动时创建，全局的，通常由sas赋值，有时可以由⽤户⾃⼰赋值 foo...
SAS语言程序由数据步和过程步组成。数据步用来生成数据集、计算、整理数据,过程步用来对数据进行分析、报告。SAS语言的基本单位是语句,每个SAS语句一般由一个关键字(如DATA,PROC,INPUT,CARDS,BY)开头,包含SAS名字、特殊字符、运算符等,以分号结束。 SAS关键字是用于SAS语句开头的特殊单词,SAS语句除了赋值、累加、注释...
Usingmacro variables and macro code is difficult to learn without some training and examples that are easy to understand. This workshop will introduce the user to a few of the very powerful techniques that are possible using macrovariables and macro programming.Steven First...
以甲基丙烯酸(MAA)和4种不同侧链长度的甲氧基聚乙二醇(MPEG相对分子质量分别为350,500,750,1000)先聚合得到酯化大单体(MPEGMAA),再以甲基丙烯酸,烯丙基磺酸钠(SAS)为单体,在引发剂过硫酸钾,阻聚剂对苯二酚作用下聚合得到4种具有不同侧链长度的聚羧酸盐分散剂.通过红外(FT-IR),核磁共振氢谱(1HNMR)和凝胶渗透...