check.data（x，allowed.types = c（discrete.data.types，Continuous.data.types））中的错误：

Question

我正在尝试使用“不平衡” R软件包，并且出现了此类错误：

> library(imbalance)
> newSamples <- racog(iris0, numInstances = 40, burnin = 20, lag = 10, classAttr="Class")

有效！

> newSamples <- racog(iris0[,c("SepalLength","Class")], numInstances = 40, burnin = 20, lag = 10, classAttr="Class")
Error in check.data(x, allowed.types = c(discrete.data.types, continuous.data.types)) : 
  the data must be in a data frame.

这是个问题

iris0[,c("SepalLength","Class")]和iris0（如果是类型）有什么区别？