Question

我正在使用R 3.6.1。我想离散化连续变量。我尝试使用https://www.rdocumentation.org/packages/arules/versions/1.6-4/topics/discretize中的离散化函数。但这会引发错误。

library(infotheo)
data(iris)
x <- iris[,1]
table(discretize(x, breaks = 3))
Error in discretize(x, breaks = 3) : unused argument (breaks = 3)

Answer 1

您加载到错误的程序包。您所指的功能来自arules：

library(infotheo)
library(arules)

x <- iris[,1]
table(arules::discretize(x, breaks = 3)) #works
table(infotheo::discretize(x, breaks = 3)) # does not have a breaks argument

Answer 2

您似乎正在使用infotheo::discretize，它没有breaks参数。这是文档给出的参数：

# library(infotheo)
discretize( X, disc="equalfreq", nbins=NROW(X)^(1/3) )

您链接到的包是arules，并且arules::discretize确实有一个breaks参数：

# library(arules)
discretize(x, method = "frequency", breaks = 3, 
  labels = NULL, include.lowest = TRUE, right = FALSE, dig.lab = 3,
  ordered_result = FALSE, infinity = FALSE, onlycuts = FALSE, 
  categories, ...)

Answer 3

R中有很多库，您尝试使用 arules 包中的 discretize 函数。如果您同时加载了两个软件包：

library(infotheo)
library(arules)
data(iris)
x <- iris[,1]
table(arules::discretize(x, breaks = 3))

或

table(infotheo::discretize(x, nbins = 3))

离散函数引发突发错误

3 个答案: