在 R 编程中对数值向量进行分箱 - .bincode()函数

R 语言中的.bincode()函数用于对数字向量进行分箱并返回整数代码以进行分箱。

Syntax:
.bincode(x, breaks, right = TRUE, include.lowest = FALSE)

Parameters:
x: a numeric vector which is to be converted to integer codes by binning.
breaks: a numeric vector of two or more cut points, sorted in increasing order.
right: logical value, indicating if the intervals should be closed on the right (and open on the left) or vice versa.
include.lowest: logical value, indicating if an ‘x[i]’ equal to the lowest (or highest, for right = FALSE) ‘breaks’ value should be included in the first (or last) bin.

示例 1：

# R program to illustrate
# .bincode function
  
# Initializing a numeric vector which is
# to be converted to integer
# codes by binning
x <- c(0, 0.01, 0.5, 0.99, 1)
  
# a numeric vector of two or more cut 
# points, sorted in increasing order
b <- c(0, 1, 2, 3)
  
# Calling .bincode() function
.bincode(x, b)
.bincode(x, b, TRUE)
.bincode(x, b, FALSE)

输出：

[1] NA  1  1  1  1
[1] NA  1  1  1  1
[1] 1 1 1 1 2

示例 2：

# R program to illustrate
# .bincode function
  
# Initializing a numeric vector which is
# to be converted to integer
# codes by binning
x <- c(0, 0.1, 0.2, 0.3, 1)
  
# a numeric vector of two or more cut 
# points, sorted in increasing order
b <- c(0, 1, 2, 3)
  
# Calling .bincode() function
.bincode(x, b, TRUE, TRUE)
.bincode(x, b, FALSE, TRUE)

输出：

[1] 1 1 1 1 1
[1] 1 1 1 1 2