Get or Set the Structure of a Vector in R Programming – structure() Function

structure() function in R Language is used to get or set the structure of a vector by changing its dimensions.

Syntax: structure(vec, dim)

Parameters:
vec: Vector
dim: New Dimensions

Example 1:

# R program to get
# the structure of a Vector

# Creating a Vector
# of Numbers
x1 <- c(1:10)
structure(x1)

# Creating a vector
# of strings
x2 <- c("abc", "cde", "def")
structure(x2)

Output:

[1]  1  2  3  4  5  6  7  8  9 10
[1] "abc" "cde" "def"

Example 2:

# R program to change
# the structure of a Vector

# Creating a Vector
x <- c(1:10)
x

# Changing the structure of vector
y1 <- structure(x, dim = c(2, 5))
y2 <- structure(x, dim = c(5, 2))
y1
y2

Output:

 [1]  1  2  3  4  5  6  7  8  9 10
     [, 1] [, 2] [, 3] [, 4] [, 5]
[1, ]    1    3    5    7    9
[2, ]    2    4    6    8   10
     [, 1] [, 2]
[1, ]    1    6
[2, ]    2    7
[3, ]    3    8
[4, ]    4    9
[5, ]    5   10