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2010 May 31
2
Problems with apply
Hello I am tryin to use the apply functions with two data frames I've got
and I am getting the following error message
Error en HistRio$SecSte : $ operator is invalid for atomic vectors
I don't understand why. when I use the apply I am doing:
PromP <- function(HistRio,AnaQuim){
xx <- c(0,0,0)
if(length(which(AnaQuim$SecSte==HistRio$SecSte))>0){ xx[1]<-1 }
if(length(which(as.Date(AnaQuim$A?O1)<=as.Date(HistRio$FinCor...