在 R 编程中创建序列元素的向量 – seq()函数

R 语言中的seq()函数用于在 Vector 中创建元素序列。它将值之间的长度和差异作为可选参数。

Syntax:
seq(from, to, by, length.out)

Parameters:
from: Starting element of the sequence
to: Ending element of the sequence
by: Difference between the elements
length.out: Maximum length of the vector

示例 1：

# R Program to illustrate
# the use of seq() Function
  
# Creating vector using seq()
vec1 <- seq(1, 10, by = 2)
  
vec2 <- seq(1, 10, length.out = 7)
  
# Printing vectors
print(vec1)
print(vec2)

输出：

[1] 1 3 5 7 9
[1]  1.0  2.5  4.0  5.5  7.0  8.5 10.0

示例 2：

# R Program to illustrate
# the use of seq() Function
  
# Creating vector using seq()
vec1 <- seq(10, 1, by = -2)
  
vec2 <- seq(10, 1, length.out = 4)
  
# Printing vectors
print(vec1)
print(vec2)

输出：

[1] 10  8  6  4  2
[1] 10  7  4  1