qrp_report

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*                                           PROGRAM OVERVIEW

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*

* PROGRAM: utility_macros.sas  

*

* Created (mm/dd/yyyy): 12/20/2015

* Last modified: 12/1/2020

*

*--------------------------------------------------------------------------------------------------

* PURPOSE: This program includes the following macros:

*   - %isdata() macro determines whether a dataset is empty or not

*   - %create_comma_charlist() macro converts space delimited list to comma delimited list with quotes

*   - %alphabetizevarutil() macro alphabetizes variables in a data step

*   - %tableletter() macro increments a letter suffix

*   - %varexist() macro checks for the existence of a variable

*   - %convert_categories() macro converts categories to mathematical expression

*   - %output_datasets() macro output SAS datasets  

*   - %nonrep() macro removes repeated words in macro variable

*

*  Program inputs:                                                                                   

*   -

* 

*  Program outputs:                                                                                                                                       

*   -

* 

*  PARAMETERS:                                                                       

*            

*  Programming Notes:                                                                                

*                                                                           

*

*--------------------------------------------------------------------------------------------------

* CONTACT INFO: 

*  Sentinel Coordinating Center

*  info@sentinelsystem.org

*

***************************************************************************************************;

​

*Macro to determine whether a dataset is empty or not;

%MACRO ISDATA(dataset=);

    %GLOBAL NOBS;

    %let NOBS=0;

    %if %sysfunc(exist(&dataset.))=1 and %LENGTH(&dataset.) ne 0 %then %do;

        data _null_;

        dsid=open("&dataset.");

        call symputx("NOBS",attrn(dsid,"NLOBS"));

        run;

    %end;   

%PUT &NOBS.;

%MEND ISDATA;

​

*Macro for converting macro variable with space deliminated list to comma deliminated list with quotation around each word;

%macro create_comma_charlist(inlist=, outlist=);

  %global &outlist.;

​

  %let countvars = %sysfunc(Countw(%quote(&inlist.), ' '));

    %do c = 1 %to &countvars.;

      %let word = %scan(%quote(&inlist),&c., ' ');

        %if &c. = 1 %then %do;

          %let &outlist. = "&word.";

        %end;

        %else %do;

          %let &outlist. = &&&outlist. , "&word.";

        %end;

    %end;

  %let &outlist = %upcase(&&&outlist);

%mend create_comma_charlist;

​

*Macro to alphabetize variables in a data step;

%macro alphabetizevarutil(array=, in=, out=);

    array &array.[10] $50 _temporary_;

      call missing(of &array.[*]);

       do i = 1 to dim(&array.) until(p eq 0);

        call scan(&in.,i,p,l);

          &array.[i] = substrn(&in.,p,l);

    end;

    call sortc(of &array.[*]);

    length &out. $100;

    &out. = catx(' ',of &array.[*]);

    drop i p l &in.;

%mend;

​

*Macro for incrementing table/figure letter suffix;

%macro tableletter();

  %if %eval(&tablecount = 0) %then %do;

    %let tableletter = ;

  %end;

  %else %do;

      %if %eval(%sysfunc(mod(&tablecount.,26))=0) %then %do;

        %let div = %eval((&tablecount. / 26)-1); %put &div.;

        %let secondplace = %eval(&tablecount - (26*&div));%put &secondplace.;