Dear people,
I am including an example of a dataframe:
mydataframe<-data.frame(X=c(1:4),total_bill=c(16.99,10.34,21.01,23.68),tip=c(1.01,1.66,3.50,3.31),sex=c("Male","Male","Male","Female"))
When I use the sapply function getting the information about the factors
works:
sapply(mydataframe,function(x)is.factor(x))
X total_bill tip sex
FALSE FALSE FALSE TRUE
But if I use the apply function it doesn't work:
apply(mydataframe,2,function(x)is.factor(x))
X total_bill tip sex
FALSE FALSE FALSE FALSE
I don't understand why, because I have used the apply function for
dataframes before e.g. using sum(x) instead of is.factor(x) and it did work.
Could anyone help me with this?
Thank you very much for your help in advance!
Marion
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