I have a dataframe imported from csv file below:
Houseid,Personid,Tripid,taz
1,1,1,4
1,1,2,7
2,1,1,96
2,1,2,4
2,1,3,2
2,2,1,58
There are three groups identified based on the combination of first and
second columns. How do I split this data frame?
I tried
aa <- split(inpfil, inpfil[,1:2])
but it has problems.
Output desired is
aa[1]
Houseid,Personid,Tripid,taz
1,1,1,4
1,1,2,7
aa[2]
Houseid,Personid,Tripid,taz
2,1,1,96
2,1,2,4
2,1,3,2
aa[3]
Houseid,Personid,Tripid,taz
2,2,1,58
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