1.%str在宏编译时,以常量文本掩盖特殊字符和助记符( / + − * < > = ¬ ^ ~ ; , # blank AND OR NOT EQ NE LE LT GE GT IN,引号、括号)。%str参数不用引号。 见代码 2.%eval在宏编译时,对括号内的值进行计算后再赋值。 3.%sysfunc在宏语句中执行SAS或用户自己定义的函数,语
New Macro Features Added in SAS® 9.3 and SAS® 9.4There are a number of new features that have been added to the macro facility during 9.3 and 9.4. You might not be aware of these features and you might find them useful. There are several new macrofunctions, several new automatic ...
How to Concatenate Values Learn how use the CAT functions in SAS to join values from multiple variables into a single value. Find more tutorials on the SAS Users YouTube channel.SAS Training: Just a Click Away Ready to level-up your skills? Choose your own adventure. Browse our catalog!
The SAS DATA step has the reputation for being one of the best data manipulators in the IT world. While the author of this paper agrees with this statement, it is possible to go beyond the capabilities of the DATA step by using SAS Macro functions. It would be difficult to show the ...
SAS Macro由于宏变量 (Macro Variable)的存在,功能有极大的扩展,但是无论如何你不能像函数(Function)一样使用一个return语句返回一个值。 最简单的解决方案(workaround)当然是通过宏变量传递值了。假设我们想定义一个宏,功能是传入一个dataset,然后求观测数(# of records/observations)。我们可以如下定义: %macro ...
Other functions/macros 宏语言中有一些以”Q”开头的函数或宏也可以实现对其运算结果的quote。 如函数 %QSCAN, %SUBSTR, %QSYSFUNC, %QUPCASE, 以及宏%QCOMPRES, %QLEFT, %QLOWCASE, %QTRIM。 %UNQUOTE 这个函数的作用在于解除对特殊字符或运算符的隐藏,恢复其原有...
1. As a macro function, youdo not need to enclose character values in quotation marksas you do in DATA step functions. One way in which macro language is different from SAS language isMacro-variable values are always text, quotation marks are not needed to indicate texr constants in the ma...
Macro Extended Functions 所有宏函数的语法格式是一致的:localmacro:function,即在定义好宏的名字之后的冒号后使用函数。下面我们具体介绍两类函数,一类是word i of,用来处理平行列表,一类是varlabel,用来提取变量标签。 处理平行列表(word i of) 我们处理数据时会遇到需要使用两列平行的变量的情况。用STATA的auto.dt...
Introduction The Macro Language serves as an extension to the SAS System for the purpose of generating text in the form of SAS code, including partial and/or complete statements, DATA steps, PROC steps, variables, text strings, functions, informats, formats, expressions, comparison and logical ...
STATA Tidbits:Macro Extended Functions 前言 宏(Macro)是STATA程序中很重要的概念,主要用来在循环语句中对一系列变量名称或者数字进行替代,从而减少机械重复。在这些基础用法之外,STATA提供了一些宏的函数,来增强宏的功能。...本文将对其中两类宏函数进行举例介绍。 Macro Extended Functions 所有宏函数的语法格式是一致...