Error in View: arguments imply differing number of rows

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0

When I try to run the function , it receive the error: arguments imply differing number of rows: 2, 1, 0.

What can I do?

    install.packages("combinat")
    require(combinat)        

    df2 <- c(1234,1333,1332,1333,15,1234,15, 162, 1234)
    num2<- c(1,2,3,1,4,2,2, 2,3)
    data.frame(df2,num2)

    result1 <-combn(4, 2, function(reqn, df){
    names(Filter(identity,
           apply(table(df2, factor(num2, levels=reqn))>0, 1, all)))
    }, df=df2, simplify=FALSE)
    View(result1)

asked 38 secs ago

DonJuan

1