почему я получаю ошибку уровней в as.factor () R?

Question

Я не могу заставить фактора распознавать набор уровней. По какой-то причине я просто не вижу ошибку / опечатку. Это сводит меня с ума.

Код:

yearsPostEDI<-as.matrix(namedat$`Days post EDI`)
yearsPostEDI<-as.numeric(yearsPostEDI)/365
yearsPostEDI<-round(yearsPostEDI,0)
yearsPostEDI[1:10]<-c(rep("HIV_neg",10))
yearsPostEDI[yearsPostEDI == "0"] <- "<1 Year"
yearsPostEDI[yearsPostEDI == "1"] <- "1 Year"
yearsPostEDI[yearsPostEDI == "2"] <- "2 Years"
yearsPostEDI[yearsPostEDI == "3"] <- "3 Years"
yearsPostEDI[yearsPostEDI == "4"] <- "4 Years"
yearsPostEDI[yearsPostEDI == "5"] <- ">4 Years"
yearsPostEDI[yearsPostEDI == "6"] <- ">4 Years"
yearsPostEDI[yearsPostEDI == "7"] <- ">4 Years"
yearsPostEDI<-as.factor(yearsPostEDI, levels = c("HIV_neg", "<1 Year", "1 Year", "2 Years", "3 Years", "4 Years", ">4 Years"))
yearsPostEDI

Сообщение об ошибке:

Error in as.factor(yearsPostEDI, levels = c("HIV_neg", "<1 Year", "1 Year",  : 
  unused argument (levels = c("HIV_neg", "<1 Year", "1 Year", "2 Years", "3 Years", "4 Years", ">4 Years"))

Answer 1

Вам нужно

yearsPostEDI<-factor(yearsPostEDI, levels = c("HIV_neg", "<1 Year", "1 Year", "2 Years", "3 Years", "4 Years", ">4 Years"))

factor() не as.factor()