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...
To illustrate the method, some random number functions are used to generate a test data set. A restriction on the use of the random number functions is coincidentally given. Finally, I close with a tip on macro variable syntax.Carl E. PierchalaWashington...
The value of a macro variable is stored in asymbol table。 The values ofautomatic macro variablesare always stored in theglobal symbol table(意味着你总可以引用到这些宏) The values ofuser-defined macro variablescan reside either in a macro symbol table local or in the global symbol table.(自...
2. When you reference a macro variable in a SAS program, SAS replaces the reference with the text value that has been assigned to that macro variable. By substituting text into programs, SAS macro variables make your programs more reusable and dynamic 3. 判断宏变量定义的结束是以分号为分...
Syntax <variable=>SUBSTR(string, position<,length>) Details In a DATA step, if the SUBSTR (right of =) function returns a value to a variable that has not previously been assigned a length, then that variable is given the length of the first argument...
ods rtf text="Insert here an interpretation of your parameter estimates with your macro variable"; She wants us to create the macro using call syntax and it has to just be inserted into that rtf text that I provided. My p values are in a dataset called WORK.TABLETWO and it is the p...
IDvariables :会remove前面的observation 数,换成variable Select Obeservations method1:where[只有where才可以与contains连用,if不可以] method2:FIRSTOBS=n(从第#nline开始读) andOBS=n(读到n为最后一行) 3. process data 1. sort data 默认ascending ...
所谓的Macro Quoting,就是%STR,%NRSTR,%NRBQUOTE,%BQUOTE一类的Macro Function。介绍这类函数一个非常常见的例子是,假定想用%LET语句为宏变量a赋值1;2: %let a = 1;2; %put &a; === %let a = 1; 2; - 180 ERROR 180-322: Statement is not valid or it is used out of proper order. %put...
Changing a variable name is an inevitable fact of programming. There are several ways to accomplish this depending on the types of SAS statements involved. Consider the following SAS code.data one;input x z;y=x+1;cards;1 2 ;The variables acquire their names through the INPUT statement (...
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