I have a vehicle count variable that I need to assign a vehicle number from. I think I need an enumeration of some type...the last column is the column I need to create.
VC VN 1 1 1 1 1 1 1 1 1 1
2 1
2 2
2 1
2 2
2 1
3 1
3 2
3 3
3 1
Based on your sample data something like below could work.
data have;
input vc vn;
datalines;
1 1
1 1
1 1
1 1
1 1
2 1
2 2
2 1
2 2
2 1
3 1
3 2
3 3
3 1
;
data want(drop=_:);
set have;
by vc;
if first.vc then
do;
_s2+1;
_s1=_s2;
end;
else _s1+1;
vn_calc=1+mod(_s1,_s2);
run;
proc print data=want;
run;
Is this a Rorschach test ?
I cannot see a pattern there.
So you you will need to describe the rule if you us to help you with code to implement it.
I have never considered Enumeration of a variable. What does that mean?
I know how to number OBSERVATIONS.
data want;
set have;
obs_number + 1;
run;
I know how to number GROUPS.
data want;
set have;
by group_name;
group_number + first.group_name;
run;
I know how to number the members of a group.
data want;
set have;
by group_name;
member_number + 1;
if first.group_name then member_number=1;
run;
Based on your sample data something like below could work.
data have;
input vc vn;
datalines;
1 1
1 1
1 1
1 1
1 1
2 1
2 2
2 1
2 2
2 1
3 1
3 2
3 3
3 1
;
data want(drop=_:);
set have;
by vc;
if first.vc then
do;
_s2+1;
_s1=_s2;
end;
else _s1+1;
vn_calc=1+mod(_s1,_s2);
run;
proc print data=want;
run;
Amazing, thank you so much!
data want;
set have;
by vc;
retain counter;
if first.vc then counter=0;
counter = ifn(counter<VC, counter+1, 1);
/*if counter<VC then counter+1; else counter=1;*/
run;
@chsprogramming wrote:
I have a vehicle count variable that I need to assign a vehicle number from. I think I need an enumeration of some type...the last column is the column I need to create.
VC VN 1 1 1 1 1 1 1 1 1 1
2 1
2 2
2 1
2 2
2 1
3 1
3 2
3 3
3 1
Available on demand!
Missed SAS Innovate Las Vegas? Watch all the action for free! View the keynotes, general sessions and 22 breakouts on demand.
Learn the difference between classical and Bayesian statistical approaches and see a few PROC examples to perform Bayesian analysis in this video.
Find more tutorials on the SAS Users YouTube channel.
Select SAS Training centers are offering in-person courses. View upcoming courses for: