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AJChamberlain
Obsidian | Level 7

Hi everyone

 

I have a dataset in SAS with variables Var1 Var2 and Var3, Var1 is A or B Var2 is X or Y and for each combination of these I count the number of instances of Var 3. So this dataset:

 

Var1Var2Var3
AX1
AY1
AX1
AX1
BX1
BX1
BY1
BY1

 

Produces this summary:

                    X                   Y

A31
B22

 

but when there are no instances of some combinations I still want to report a null result as zero for all combinations, so for example this dataset:

 

Var1Var2Var3
AX1
AY1
AX1
AX1
AX1
AX1
AY1
AY1

 

produces this:

 

                     X                Y

A53

 

where I want it to produce this:

 

 XY
A53
B00

 

I'm using proc SQL to count my instances, but I need some way of telling the system to look out for all combinations of Var1 and Var2 and return 0 where they don't exist. Can anyone tell me how I might do this?

 

Any ideas gratefully received!

 

Thanks

Andy

1 ACCEPTED SOLUTION

Accepted Solutions
ballardw
Super User

@AJChamberlain wrote:

Hi everyone

 

 
     

 

but when there are no instances of some combinations I still want to report a null result as zero for all combinations, so for example this dataset:

Are you looking for a dataset (used by other parts of a program0 or a report (people read these)?

Do you know all the values that Var1 and Var2 will have? Then perhaps a format for the var1 and the option Preloadfmt

proc format library=work;
value $v
'A'='A'
'B'='B'
;
run;
data have;
input Var1 $ Var2 $ Var3 ;
datalines;
A X 1 
A Y 1 
A X 1 
A X 1 
A X 1 
A X 1 
A Y 1 
A Y 1 
;
run;

proc tabulate data=have;
   class var1 /preloadfmt;
   format var1 $v.;
   class var2;
   var var3;
   table var1,
         var2*var3=''*n=''
         /printmiss
   ;
run;
   

Proc means/summary will do similar for a data set though you need to add options completetypes and missing to the proc statement.

View solution in original post

3 REPLIES 3
PeterClemmensen
Tourmaline | Level 20

Is your data representable of your actual problem? I.e, do you only have the two categories A and B to worry about, or do you have more?

 

Perhaps the approaches in this thread may be of help

 

https://communities.sas.com/t5/SAS-Procedures/PROC-FREQ-Include-Zero-Counts/td-p/325505

ballardw
Super User

@AJChamberlain wrote:

Hi everyone

 

 
     

 

but when there are no instances of some combinations I still want to report a null result as zero for all combinations, so for example this dataset:

Are you looking for a dataset (used by other parts of a program0 or a report (people read these)?

Do you know all the values that Var1 and Var2 will have? Then perhaps a format for the var1 and the option Preloadfmt

proc format library=work;
value $v
'A'='A'
'B'='B'
;
run;
data have;
input Var1 $ Var2 $ Var3 ;
datalines;
A X 1 
A Y 1 
A X 1 
A X 1 
A X 1 
A X 1 
A Y 1 
A Y 1 
;
run;

proc tabulate data=have;
   class var1 /preloadfmt;
   format var1 $v.;
   class var2;
   var var3;
   table var1,
         var2*var3=''*n=''
         /printmiss
   ;
run;
   

Proc means/summary will do similar for a data set though you need to add options completetypes and missing to the proc statement.

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