SAS - formats - multilabel formats

sas_mlf_format

/*This program shows how an multilabel format works and that the summary statistics can be done at a unique level but also aggregated at a higher level included in the data.*/

/*sample data*/
data have;
input Year    Area $    Profit;
cards;
2001    A   1
2002    A   2
2001    B   1
2001    C   3
2002    C   1
2001    E   4
2002    E   2
2001    F   3
2002    F   4
;;;;
run;

*format - groups A/B/C into D and E/F into G as well;
proc format;
value $ area_fmt (multilabel)
'A' = 'A'
'B' = 'B'
'C' = 'C'
'A', 'B', 'C' = 'D'
'E' = 'E'
'F' = 'F'
'E', 'F' = 'G';
run;

*summary statistics - not CLASS and FORMAT statements;
proc means data=have noprint nway;
class year area / mlf;
format area $area_fmt.;
var profit;
output out=want sum(profit)=profit;
run;

*show results;
proc print data=want;
run;