How to write a macro program in sas

The macro processor translates the macro syntax into standard SAS syntax which is then compiled. EVAL function also returns a text result. Instead we choose to write a macro program which will automatically cycle through all the dependent variables and fit a logistic model to each one of the dependent variables.

If, we create a variable like: The current macro program stacks exactly four data sets together, no more and no less. Loops Loops are used to create a dynamic program, which executes for a number of iterations, based on some conditions called conditional iteration.

The difference between these types of arguments occur when we want to execute the macro program.

SAS - Macros

Suppose that we want to create a new variable in the hsb2 data set that is constant across the entire data set and the value for this variable is the number of students who have a writing score 55 or higher.

The syntax used is CALL SYMPUT argument1, argument2where argument1 is the macro variable that we are creating which will store the value that is being passed out of the data step and argument2 is the value in string format.

Suppose we have four data sets that are named file1, file2 and so forth. The current macro program stacks exactly four data sets together, no more and no less.

Now scan stores the second variable in the dependent variable list in dep and this variable is used as the dependent variable in the logistic procedure.

We could simply write a proc logistic for each model but this would be tedious and typing intensive. Proc sql can create SAS macro variables that contains values from a query result. In the below examplewhen the value of the variable "val" becomes 10, the macro terminates else it contnues.

If IMPLMAC is in effect and you have defined a statement-style macro in your program, the macro processor scans the first word of every SAS statement to see whether it is a statement-style macro invocation.

Introduction to SAS Macro Language

As you will see in later examples in this chapter, macros can do much more than the macro DSN does. EVAL function also returns a text result. Here is a simple example: In this long section, we have mentioned the following.Each macro program can be maintained separately if necessary and invoked separately, allowing flexibility in using the code.

And although the same type of flexibility might be provided with %include functionality, many sites prefer autocall macro programs and/or stored compiled macro programs for the added security and central storage location.

Write SAS® Code to Generate Another SAS® Program A Dynamic Way to Get Your Data into SAS® Linda Gau, Pro Unlimited @ Genentech, Inc., South San Francisco, CA If you are a macro guru, you might like to write dynamic code using SAS macro language.

Here is a solution provided by Brit Harvey.

Macro within a macro

We are just providing the idea, the rest of the. same SAS code in each program: macro variables Library references are created in order for SAS to read or write a SAS data set to a directory (or folder).

SAS calls the directory or folder a library and assigns “nicknames” to these libraries. By coding the Main. Hi: Generally speaking, it is a good idea to start with a working SAS program -before- you "macro-ize" the program. In the regular SAS world, without any macro code involved, this would be problematic SAS code.

A TUTORIAL ON THE SAS MACRO LANGUAGE John J. Cohen AstraZeneca LP Abstract The SAS Macro language is another language that rests on In Figure 4 we will have the program elect to create a backup of the CLAIMS dataset if we are running the report at year’s end (i.e., month 12).

Hi Guys, I would like to ask for your help to determine if my idea is possible. I am currently automating a group program and currently finished writing a macro code that creates a table log or statistics that will send and email.

How to write a macro program in sas
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