R 语言 gl 示例说明
最编程
2024-03-19 12:01:39
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gl()
R语言中的函数用于通过指定其级别的模式来生成因子。
用法:
gl(x, k, length, labels, ordered)
参数:
x:级别数
k:重复次数
length:结果长度
labels:向量的标签(可选)
ordered:用于对级别进行排序的布尔值
范例1:
# R Program to generate factors
# Creating a factor
# using gl() function
x1 <- gl(2, 5)
# gl() function with
# length specified
x2 <- gl(3, 4, 12)
# Printing the factors
print(x1)
print(x2)
输出:
[1] 1 1 1 1 1 2 2 2 2 2 Levels:1 2 [1] 1 1 1 1 2 2 2 2 3 3 3 3 Levels:1 2 3
范例2:
# R Program to generate factors
# gl() function with
# length and labels specified
x1 <- gl(3, 4, 12, label = letters[1:12])
# gl() function with
# length, label and order specified
x2 <- gl(3, 4, 12, label = letters[1:12], ordered = T)
# Printing the factors
print(x1)
print(x2)
输出:
[1] a a a a b b b b c c c c Levels:a b c d e f g h i j k l [1] a a a a b b b b c c c c Levels:a < b < c < d < e < f < g < h < i < j < k < l
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