Proc tabulate,in my column i have more than 50 variable how can i reduce it to only 5? - sas

Question

proc tabulate data=D.Arena out=work.Arena ;
class Row1 Column1/ order=freq ;
table Row1,Column1 ;
run;
after running this i received these results and now i want to restrict the columns to only 5 variables

Answer 1

Use a 'where' statement to restrict the col1 values being tabulated.
You can restrict based on a value property such as starts with the letter A
where col1 =: 'A';
You can restrict based on a value list:
where col1 in ('Apples', 'Lentils', 'Oranges', 'Sardines', 'Cucumber');
Sample data:
data have;
call streaminit(123);
array col1s[50] $20 _temporary_ (
"Apples" "Avocados" "Bananas" "Blueberries" "Oranges" "Strawberries" "Eggs" "Lean beef" "Chicken breasts" "Lamb" "Almonds" "Chia seeds" "Coconuts" "Macadamia nuts" "Walnuts" "Asparagus" "Bell peppers" "Broccoli" "Carrots" "Cauliflower" "Cucumber" "Garlic" "Kale" "Onions" "Tomatoes" "Salmon" "Sardines" "Shellfish" "Shrimp" "Trout" "Tuna" "Brown rice" "Oats" "Quinoa" "Ezekiel bread" "Green beans" "Kidney beans" "Lentils" "Peanuts" "Cheese" "Whole milk" "Yogurt" "Butter" "Coconut oil" "Olive oil" "Potatoes" "Sweet potatoes" "Vinegar" "Dark chocolate"
);
do row1 = 1 to 20;
do _n_ = 1 to 1000;
col1 = col1s[ceil(rand('uniform',50))];
x = ceil(rand('uniform',250));
output;
end;
end;
run;
Frequency tabulation, also showing ALL counts
* col1 values shown in order by value;
proc tabulate data=have;
class row1 col1;
table ALL row1,col1;
run;
* col1 values shown in order by ALL frequency;
proc tabulate data=have;
class row1;
class col1 / order=freq;
table ALL row1,col1;
run;
* Letter T col1 values shown in order by ALL frequency;
proc tabulate data=have;
where col1 =: 'T';
class row1;
class col1 / order=freq;
table ALL row1,col1;
run;
A top 5 only list of Col1s would require a step that determines which col1s meet that criteria. A list of those col1s can be used as part of a where in clause.
* determine the 5 col1s with highest frequency count;
proc sql noprint outobs=5;
select
quote(col1) into :top5_col1_list separated by ' '
from
( select col1, count(*) as N from have
group by col1
)
order by N descending;
quit;
proc tabulate data=have;
where col1 in (&top5_col1_list);
class row1;
class col1 / order=freq;
table ALL row1,col1;
run;
Col1s in order of value
Col1s in order of frequency
T Col1s
Top 5 Col1s