CREATING USER-DEFINED VARIABLES USING THE %LET STATEMENT One way to create a macro variable is to use the %LET statement, which has the following form.
Getting DATA Step Variables and Macro Variables to Share Christianna Williams, PhD The University of North Carolina at Chapel Hill ABSTRACT Because one of the most powerful incentives to use the SAS® macro language is to allow SAS programs to be more data-driven, it is critical for the DATA step and the macro facility to “talk” to each other. In this course we'll just touch on a few helpful elements of the macro language. Thank you! You can create multi-use programs in which titling, subsetting, and even analysis variables can be controlled by changing the values of macro variables. All statements in the macro language begin with a % sign, and the %LET statement creates a macro variable. The %GLOBAL statement creates one or more global macro variables and assigns null values to the variables. don't know how to deal with it in R. Any help will be highly appreciated! Macro variables are either automatic, which is provided by SAS, or user-defined, which is created by SAS users. But if you want to automate the Creating a Macro Variable Array . macro-variable-1 <…macro-variable-n> is the name of one or more SAS macro variables. SAS Macro : Get variable names from a dataset Deepanshu Bhalla Add Comment SAS , SAS Macros Suppose you want to create a macro variable that puts all the variable names from a data set. data tbl1; set sashelp.cars; Note that the macro variables are preceded by a colon. It also helps create dynamic variables within the code that can take different values for different run instances of the same code. How can we remove spaces in the macro variable &No_words.? Output 3. Solved: Hello Please see a code to create a macro variable. To create a few macro variables, the %LET statement works extremely well. Although there were 10 variables defined, the INTO operator only creates the number of macro variables needed by the results. Global macro variables are variables that are available during the entire execution of the SAS session or job. The SAS macro language is designed to help make your programs reusable and dynamic. … We will only cover the user-defined macro variables in this paper.
The first step is to create the macro variable. Using the INTO operator places the results of the query into macro variables. Tried couple times, it doesn't work, the problem probably is from "filter(group="group")", I know SAS can assign a subsetting value by a macro variable, it works like this: when group="&group". SAS has a powerful programming feature called Macros which allows us to avoid repetitive sections of code and to use them again and again when needed. Macros can also be declared for blocks of code which will be reused multiple times in a similar manner to macro variables.
For reusing code, macro variables are an indispensable part of the SAS® system.
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