R编程中计算绝对值——abs()方法

R编程中的abs()方法用于获取绝对值，即正值不变，负值转换为正值。

Syntax: abs(value)

Return: Returns the absolute value.

示例 1：

# R program to calculate absolute value
  
# Using abs() method
answer1 <- abs(-12)
answer2 <- abs(21)
answer3 <- abs(-2)
  
print(answer1)
print(answer2)
print(answer3)

输出：

[1] 12
[2] 21
[3] 2

示例 2：

# R program to calculate absolute value
  
# Using abs() method
answer1 <- abs(c(1, 2, 3, 4))
answer2 <- abs(c(1, -2, 3, -4))
  
print(answer1)
print(answer2)

输出：

[1] 1 2 3 4
[2] 1 2 3 4