search for: dat0merge

...eas TransTable has 47296 rows. I would expect when I merge the two data sets, with all.x=F, and all.y=F, that the intersection would yield 8000 rows, considering dat0 is a subset of TransTable. However, I get a neat little surprise when I check the dimensions of the resultant data frame - dat0merge, the merged data frame has 8007 rows! How can this be? Where did these extra 7 rows come from? This appears to defy logic! Thank you in advance for your help. I've put my code below for reference. Tova Fuller > dim(dat0) [1] 8000 60 > dim(TransTable) [1] 47296 9 >...