How to sum along row?

[SMR]

Hi,

Is there a way to add a column that would provide sum of values of columns (say there are 200 columns) along the row? For example, to add a new column of 'Sum' below?

Example

A B C D E Sum
2 2 5 1 0 10
..
..

[deleted_user]

data test;
infile cards;
input A1 A2 A3 A4 A5;
cards;
2 2 5 1 0
;
run;

data test2;
set test;
sum = sum (of a1-a5);
run;

[SMR]

Hi Dan,

Could pl. suggest it in using Enterprise Guide? (Not in the programming code,I don't understand the codes at this moment). Thanks
Regards,

[Olivier · Accepted solution]

First suggestion, using DATA step and the SUM function:

data test;
infile cards;
input A1 A2 A3 A4 A5;
cards;
2 2 5 1 0
;
run;

data sums;
 set test;

 /* method 1: array of all numerics */
 array n {*} _numeric_;
 sum_allnum=sum(of n[*]);

 /*method 2: variable range in data set */
 sum_range=sum(of a1-a5);
run;

If using EG and you want this in the Query Builder (SQL), you need to add a new computed column.

Its formula is SUM(var1, var2, var3, ...)
(you name each and every variable to sum, and separate them with commas).
Unfortunately the previous shortcut SUM(OF var1-var10) only works in datasteps and EG does not code them for you.

[lmyers2]

Hello - I had a related question.  Since the below is in a data step, how do you get the actual numeric sum?  When I did proc freq below, sas gave me the list of values and not the actual sum.

data; set;
sum_range=sum(of a1-a5);
run;

proc freq; tables sum_range; run;

Thanks

Laura

[KrishanAvtarSingh]

hey can you please tell me how to sum all the columns with different names....i.e. not a1,a2,a3,a4....but a,b,c,d,....

Thanks

Krishan Avtar Singh

[imld]

Use above formula but replace var1,var2,etc. with column name

[ashish112]

I want to sum of only positive numbers then how to do it?

for example I have 200 odd variables columns and values like

a   b   c ....  n  

1  -2   1...    2  

2   2   -4...  -1

and I want only positive sum of variables like

a   b   c ....  n   PositiveSum

1  -2   1...    2          4

2   1   -4...  -1         3

---

[Nikit7]

---

@ashish112 wrote:

I want to sum of only positive numbers then how to do it?

for example I have 200 odd variables columns and values like

a   b   c ....  n  

1  -2   1...    2  

2   2   -4...  -1

and I want only positive sum of variables like

a   b   c ....  n   PositiveSum

1  -2   1...    2          4

2   1   -4...  -1         3

---

---

data test;
infile cards;
input A1 A2 A3 A4 A5;
cards;
-2 2 5 1 0
1 -2 5 1 2
;
run;

proc print;
data sums;
 set test;
 array n(*) A:;
 do i=1 to dim(n);
 if n[i]<0 then n[i]=0;
 sum=sum(of n(*));
 end;
run;
proc print;
run;

[Nikit7]

Replying to Kishan Avtar,

Hi, you can use the same techniques shown above with slight modification;

for defining array,
array n {*} A--D;   /* or array n(*) _numeric_; */
sum_allnum=sum(of n[*]);
..
for direct approach,
sum = sum (of A--D); /*sum(of _numeric_)*/

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@KrishanAvtarSingh wrote:

hey can you please tell me how to sum all the columns with different names....i.e. not a1,a2,a3,a4....but a,b,c,d,....

Thanks

Krishan Avtar Singh

---