What is a macro variable?

What is a macro variable?

Macro variables are tools that enable you to dynamically modify the text in a SAS program through symbolic substitution. The value of a macro variable remains constant until it is specifically changed. Macro variables are independent of SAS data set variables.

How do I use a macro variable in SAS?

After a macro variable is created, you typically use the variable by referencing it with an ampersand preceding its name (&variable-name), which is called a macro variable reference. These references perform symbolic substitutions when they resolve to their value. You can use these references anywhere in a SAS program.

How do I create a macro variable in SAS dataset?

The SAS system provides many methods for making these macro variables. You can make them manually using the %LET statement, or you can make the process automatic using the CALL SYMPUT in the DATA step or the INTO statement in PROC SQL.

What are the two types of macro variables?

There are two types of macro variable scope, global and local, that are user defined. SAS statement “%global ~”, paired with “%local ~”, can explicitly define the scope of macro variable.

What does && mean in SAS?

&&&x&n : First two ampersands (&&) resolves to & and then X resolves to temp and then N resolves to 3.

What does Sysfunc do in SAS?

%SYSFUNC allows us to convert a macro variable using a format without having to resort to a data step. This example converts a macro variable date string into a macro variable containing the SAS date representation using an existing SAS format. This example converts a macro variable using a user format.

How macro variables are used in DATA step?

myvar = SYMGET(charvar); Using SYMGET in this way assumes that the value of the character variable CHARVAR is the name of a macro variable at each iteration of the DATA step. This statement then assigns the value of those macro variables to the DATA step variable MYVAR for each loop through the DATA step.

Where are macro variables stored?

symbol tables
Macro variables are stored in symbol tables, which list the macro variable name and its value. There is a global symbol table, which stores all global macro variables. Local macro variables are stored in a local symbol table that is created at the beginning of the execution of a macro.

How to create dynamic variable names in VBA?

I am trying to create a dynamic number of variables in VBA based on the value in a cell. Essentially what I’d like to end up with is something like Team1, Team2… to TeamX .

How to create dynamic macro variable with call symput?

If the only remaining issue is making these macro variables global, switch from CALL SYMPUT to CALL SYMPUTX. It supports a third argument, that can simply be specified as “G” to make the macro variables global. You forgot to enclose &macroVariableName with double quotes as the first argument to call symput is a string.

How to create a dynamic range in VBA?

This code simulates the range that would show up if you were to use the keyboard shortcut Ctrl + Shift + Right Arrow and then Ctrl + Shift + Down Arrow.

Can a dictionary be used as a dynamic variable?

A dictionary would probably help in this case, it’s designed for scripting, and while it won’t let you create “dynamic” variables, the dictionary’s items are dynamic, and can serve similar purpose as “variables”. Dictionaries contain key/value pairs, and the keys must be unique.