Dear R-help community,
I often get this error "missing value where TRUE/FALSE needed" when I'm doing
some loops, like with this one
for (i in 1:nrow(survey)) {
if (survey[i,7]==survey[i,3])
{survey[i,14]<-survey[i,6]}
else
if(survey[i,11]==0 && survey[i,12]==0)
{survey[i,14]<-survey[i,4]}
}
Can someone explain me what I do wrong because I don't see the difference with
other loops that work
Thanks a lot
Sarah
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