Problem with format table

[brophymj]

I want to use a formatting table to map months to quarters. I've created a format table below called "quart". I've included a sample dataset with months but I've included two months outside the range of the format table. However, when I use the code check=put(month,quart.); I still get values for the months outside the range of the format table, specifically, 1 for month 13 and 2 for month 21. Is there a way to change the code so that the code is only executed where the months are in the range of the format table. Something like

if check=put(month,quart.) ne "" then do;

Here is the sample code

data quart;
input start $2. label $1.;
datalines;
011
021
031
042
052
062
073
083
093
104
114
124
;
run;

data quart;
set quart;
fmtname = "quart";
type = "c";

run;

proc format cntlin = quart fmtlib;
run;

data dataset;
input month $2.;
datalines;
01
02
13
21
;
run;

data dataset;
set dataset;
check=put(month,quart.);
run;

[RW9 · Accepted solution]

I would suggest putting both sets of data in datasets and use normal merging techniques.  I would also clarify what you mean by "in the range of the format table"?

[brophymj]

The field start in the format table quart ranges from 01 to 12 (representing months of the year), the label in the table is the quarter. When I read values from this table in my dataset with "funny" months like 13 and 21, it still returns values.

I would use merges only this is a very simplified example of what I'm doing so merge would appear to be the easier option.

Thanks