topic Re: Help: Try to sum up columns with dynamic count in SAS Procedures

Help: Try to sum up columns with dynamic count

meatmuffin — Tue, 08 Jan 2013 14:08:51 GMT

Hello,

I have a data set with a dynamic number of columns. This means the count of the columns is growing every trimester by 1.

Now I should be able to add a additional line which is calculating the total (sum).

Does anybody have an idea?

The set looks like the following:

X_Class1	2012/1	2012/2	2012/3	2012/4
1	500	600	300	1000
2	400	550	250	850
3	100	200	110	620

Now I should generate a line X_Class1:9999 with the totals of each column in it.

In addition at the 4/1/13 an new column 2013/1 will be added and the total must also be generatet automatically in there.

thank you

Re: Help: Try to sum up columns with dynamic count

data_null__ — Tue, 08 Jan 2013 15:00:38 GMT

In your SAS data set name the dynamic colums with a common root. QTR2012_1 QTR2012_2 etc.

Then you can use a "SAS Variable List" such as QTR: to refer to all the variables in a consise way.

TOTAL=sum(OF qtr:); The keyword OF is important for use in the function.

http://support.sas.com/documentation/cdl/en/lrcon/65287/HTML/default/viewer.htm#p0wphcpsfgx6o7n1sjtqzizp1n39.htm

Re: Help: Try to sum up columns with dynamic count

Astounding — Tue, 08 Jan 2013 15:48:53 GMT

You're leaving a lot to the imagination here. I'll assume (as data _null_ did) that your numeric variable names all begin with QTR. Also, I'll assume that X_Class1 is character with a length of at least 6. Also, I'll assume your data set doesn't contain any additional variables that you haven't told us about.

Here's an approach:

proc means data=have noprint;

var qtr:;

where X_Class1 ne : '1:';

output out=totals (keep=qtr:) mean=;

run;

data want;

set have (where=(X_Class1 ne : '1:')) end=done;

output;

if done;

set totals;

X_Class1=cats('1:', _n_);

output;

run;

Good luck.

Re: Help: Try to sum up columns with dynamic count

meatmuffin — Wed, 09 Jan 2013 09:53:39 GMT

Thanks for the answers, but it didn't give me the result i expected.

I think I was not precisely enough. I'm sorry for that.

I try it once again.

At the moment I'm having the table as shown above by my first posting.

After summarizing the data, i would like to get the following table:

XClass_1	2012/1	2012/2	2012/3	2012/4	2013/1
1	500	600	300	1000	500
2	400	550	250	850	300
3	100	200	110	620	200
Total	1000	1350	660	2470	1000

After summarizing the trimester the red line with the totals should be generated.

Thanks for the help.

Re: Help: Try to sum up columns with dynamic count

Linlin — Wed, 09 Jan 2013 13:40:54 GMT

data have;

input A $ B1 b2 b3 b4 b5;

data have;

input A $ B1 b2 b3 b4 b5;

cards;

1 500 600 300 1000 500

2 400 550 250 850 300

3 100 200 110 620 200

;

data want;

set have end=last;

output;

t1+b1;

t2+b2;

t3+b3;

t4+b4;

t5+b5;

if last then do;

b1=t1; b2=t2; b3=t3;b4=t4;b5=t5;a='Total';

output;end;

drop t:;

proc print noobs;run;

A B1 b2 b3 b4 b5

1 500 600 300 1000 500

2 400 550 250 850 300

3 100 200 110 620 200

Total 1000 1350 660 2470 1000

Re: Help: Try to sum up columns with dynamic count

Astounding — Wed, 09 Jan 2013 14:07:37 GMT

My earlier solution should give you exactly the numbers you asked for. It won't say "Total" because that wasn't part of the original problem, but that's easy to accomplish by making three changes:

where X_Class1 ne 'Total';

(where=(X_Class1 ne 'Total'))

X_Class1='Total';

Notice that ne : has become ne. If you're getting output that is not what you want, post what changes you would like to see.

Good luck.