Title: "[[R-Data-Structure]]"
Author:
- AllenYGY
status: DONE
tags:
- NOTE
- R
- Lec1
- Program
created: 2023-12-27T01:56
updated: 2024-05-31T01:13
A vector is simply a list of items that are of the same type.
To combine the list of items into a vector, use the c() function and separate the items by a comma.
# Vector of strings
fruits <- c("banana", "apple", "orange")
# Print fruits
fruits
output:
[1] "banana" "apple" "orange"
# Vector with numerical values in a sequence
numbers <- 1:10
numbers
output:
[1] 1 2 3 4 5 6 7 8 9 10
# Vector with numerical decimals in a sequence
numbers1 <- 1.5:6.5
numbers1
# Vector with numerical decimals in a sequence where the last element is not used
numbers2 <- 1.5:6.3
numbers2
output:
[1] 1.5 2.5 3.5 4.5 5.5 6.5
[1] 1.5 2.5 3.5 4.5 5.5 6.3
默认步长为1,即每一个元素都相隔一个单位。
fruits <- c("banana", "apple", "orange")
length(fruits)
To create a vector of numbers, use the seq() function.
# Vector of numbers
numbers <- seq(1, 10)
# Print numbers
numbers
output
[1] 1 2 3 4 5 6 7 8 9 10