How can I access only one value of a column in array or suppose
X Y
2 1
2 5
3 6
I need output as
X Y Z
2 1 2
2 5 10
3 6 12
Multiplying value 1 of x with all values of y
How it is done using array
Arrays are not part of the solution. Arrays always refer to a single observation at a time.
Here is a way to get what you are asking for:
data want;
set have;
if _n_=1 then first_x = x;
retain first_x;
z = first_x * y;
drop first_x;
run;
That wouldn't use an array at all. Arrays are short cut references to variables and work only on a single row.
A SAS data step loops through all rows implicitly.
data want_mult;
set have;
Z = x * y;
run;
EDIT: I misunderstood your question so this answer is incorrect, but I'm leaving it rather than deleting since it's already out there.
Arrays are not part of the solution. Arrays always refer to a single observation at a time.
Here is a way to get what you are asking for:
data want;
set have;
if _n_=1 then first_x = x;
retain first_x;
z = first_x * y;
drop first_x;
run;
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