#' sostituisce NA
#'
#'sostituisce gli NA con un value
#' @param data
#' @param subset
#' @param value
#'
#' @return
#' @export
change_NA<-function(data,value)
{
if (NCOL(data) < 2)
data[is.na(data)]<-value
else
for(i in 1:NCOL(data))
data[,i] <- change_value(data[,i],value)
return(data)
}
change_value<-function(data,
value) UseMethod("change_value")
#' @rdname change_value
#' @method change_value factor
#' @S3method change_value factor
change_value.factor<-function(data,
value){
if (!value %in% levels(data))
{
data <-
factor(data, levels = c(levels(data), value))
}
data[is.na(data)] <- value
data <- factor(data)
return(data)
}
#' @rdname change_value
#' @method change_value numeric
#' @S3method change_value numeric
#' @S3method change_value factor
change_value.numeric<-function(data,
value){
data[is.na(data)] <- value
return(data)
}
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