Thanks guys for solving https://communities.sas.com/t5/Base-SAS-Programming/Start-Period-and-End-Period-Calculation/m-p/2868...
refered from this question.
how can i limit the calulation to just a year
ie i want to find out average of Cust_Left for that year only for each month.
Output I want is <Avg_Left >
for 11-Apr 22
for 11-May > avg(apr+may)
for 11-Dec > avg(apr+ may+ .. + dec)
for 12-Jan > avg(jan)
for 12-Feb > avg(jan+feb)
Month | Project | Start_Period | New_Cust | Cust_Left | Avg_Left | End_Period |
11-Apr | a | 0 | 131 | 22 | 22 | 109 |
11-May | a | 109 | 70 | 85 | 53.5 | 94 |
11-Jun | b | 94 | 55 | 70 | 59 | 79 |
11-Jul | a | 79 | 79 | 63 | 60 | 95 |
11-Aug | a | 95 | 154 | 96 | 67.2 | 153 |
11-Sep | b | 153 | 185 | 90 | 71 | 248 |
11-Oct | aa | 248 | 181 | 103 | 75.571 | 326 |
11-Nov | a | 326 | 161 | 114 | 80.375 | 373 |
11-Dec | s | 373 | 231 | 97 | 82.222 | 7 |
12-Jan | aaaa | 507 | 183 | 86 | 86 | 604 |
Feb-12 | aa | 604 | 86 | 24 | 55 | 666 |
Mar-12 | a | 666 | 24 | 20 | 43.333 | |
Apr-12 | s | 670 | 20 | 18 | 37 | 672 |
May-12 | a | 672 | 18 | 47 | 39 | 643 |
Jun-12 | b | 643 | 47 | 74 | 44.833 | |
Jul-12 | a | 616 | 74 | 49 | 45.428 |
How should i approach this problem any suggestion?
thanks a ton in advance 🙂
Data want (drop = sum_left cnt);
Retain sum_left cnt;
Set have;
If month =1 then do;
sum_left =0; cnt=0;
End;
sum_left + cust_left;
Cnt+1;
Avg_left= sum_left/cnt;
Run;
You need to take care of extracting month value from date colum
Data want (drop = sum_left cnt);
Retain sum_left cnt;
Set have;
If month =1 then do;
sum_left =0; cnt=0;
End;
sum_left + cust_left;
Cnt+1;
Avg_left= sum_left/cnt;
Run;
You need to take care of extracting month value from date colum
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