If data= is not specified, then the last created data set is used. This data set might or might not be the data set that is analyzed by the code that you supply in the CODE macro. The code that you supply in the code macro will be run once for each BY group defined by the by= variables in this data set. The following parameters are optional: data= data-set-name Specify the name of a data set that contains the by= variables with the desired levels defining all BY groups. A BY group is one combination of values of all of the variables specified in by=. None of the values in character variables can contain the percent (%) or ampersand (&) character or contain unmatched quotation marks (' or "). The following parameter is required when using the RunBY macro: by= variable(s) List the variables that define the BY groups. See Details below and the Results tab for examples. However, before you call the macro, you must create a simple macro, named code, that contains the code that you want to apply to each BY group. In your SAS program or in the SAS editor window, specify this statement to define the RunBY macro and make it available for use:Īfter running the above statement, the RunBY macro is ready for use. Replace the text within quotation marks in the following statement with the location of the RunBY macro definition file on your system. USAGE: Follow the instructions on the Downloads tab of this sample to save the RunBY macro definition. REQUIREMENTS: Only Base SAS ® is required. The computations performed by the macro are not affected by the appearance of this message. If it is unable to do this (such as if there is no active internet connection available), the macro will issue the following message: The RunBY macro always attempts to check for a later version of itself. HISTORY: The version of the RunBY macro that you are using is displayed when you specify version (or any string) as the first argument. The RunBY macro makes it possible to do the same with most macros and procedures that do not have this built-in BY processing capability. More generally, the macro can be used to run any code as indicated by the contents of each observation in a specified data set. For example, if your data set contains a block of observations for each of several countries or regions or conditions (such as gender or race), most SAS procedures allow you to run the procedure a single time with a BY statement telling the procedure to do the analysis or operation on each block of observations (called BY groups). PURPOSE: Many macros, and some procedures, were not written with the built-in capability to perform their analysis or operation separately on each of multiple blocks of observations in the input data set. Purpose / History / Requirements / Usage / Details / Limitations / Missing Values / See Also Tips on writing sas macros written by Roland Berry.RunBY macro: Repeatedly run or add BY processing to any macro, procedure, or special code Contents: If you would like to start writing your own macros, I'd suggest you to read the interesting document Transposing multiple variables in a SAS data set within a single macro callĬomputing the number of non-missing values in a series of variables in proc sqlĬomputing confidence intervals for difference between independent proportionsĬomputing the sum of several variables in proc sql Help yourself if you find any of them interesting too!Ĭompute Bayesian Information Criterion (BIC) in Ordinal Logistic Regression ModelsĬompute Bayesian Information Criterion (BIC) in Survival Models when one or more of the independent variables is (are) time-dependentĭescriptive statistics for date variablesĮxporting multi-dimensional data (sas→WinBUGS)Ĭomputing the arithmetic mean of several variables in proc sql This page is not the place to learn macro programming rather, I hereafter make public a few macros that I have written through the years and that have shown to be useful to colleagues. SAS macros are very useful, for example, to repeat similar analyses with different data sets, outcome variables, explanatory variables, etc.
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