Hello!
I have a dataset that is formatted kind of oddly (but must be in this format to output the way i need it to). Because of that, a simple if/then statement to create a different variable won't do. I have attempted to do a findw and an index of the variable I want to scan for and all that happens is the variable gets overwritten to the last if/then statement. What am I missing (seems fairly simple but i'm missing a piece somewhere). any insight helps. Thanks!
What I want:
vaccine mean goal
dtp_m_w 98 90
dtp_m_e 76 90
opv_m_w 56 80
opv_m_w 75 80
What i'm getting:
vaccine mean goal
dtp_m_w 98 80
dtp_m_e 76 80
opv_m_w 56 80
opv_m_w 75 80
Code I've tried:
data test;
set sample;
if index(vaccine, 'dtp') ne "" then do; goal=90; end;
if index(vaccine, 'opv') ne "" then do; goal=80; end;
run;
i've also tried:
data test;
set sample;
if findw(vaccine, 'dtp') ne "" then goal=90;
if findw(vaccine, 'opv) ne "" then goal=80;
run;
data have;
input vaccine $ mean;* goal ;
cards;
dtp_m_w 98 80
dtp_m_e 76 80
opv_m_w 56 80
opv_m_w 75 80
;
data want;
set have;
if index(vaccine, 'dtp')>0 then goal=90;
if index(vaccine, 'opv')>0 then goal=80;
run;
/*Or*/
data want;
set have;
if index(vaccine, 'dtp') then goal=90;
if index(vaccine, 'opv') then goal=80;
run;
And if the conditions are mutually exclusive i.e DTP and OPV cannot occur in the same value
Use ELSE IF
data want;
set have;
if index(vaccine, 'dtp')>0 then goal=90;
else if index(vaccine, 'opv')>0 then goal=80;
run;
/*Or*/
data want;
set have;
if index(vaccine, 'dtp') then goal=90;
else if index(vaccine, 'opv') then goal=80;
run;
The index function returns a number. It can never return a blank. So your logic using "ne" will always find a match.
Look at the way @novinosrin compared the function results to zero. That's the right comparison.
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