Intersection of Two Objects in R Programming – intersect() Function

intersect() function in R Language is used to find the intersection of two Objects. This function takes two objects like Vectors, dataframes, etc. as arguments and results in a third object with the common data of both the objects.

Syntax: intersect(x, y)

Parameters:
x and y: Objects with sequence of items

Example 1:

# R program to illustrate
# intersection of two vectors

# Vector 1
x1 <- c(1, 2, 3, 4, 5, 6, 5, 5)

# Vector 2
x2 <- c(2:4)

# Intersection of two vectors
x3 <- intersect(x1, x2)

print(x3)

Output:

[1] 2 3 4

Example 2:

# R program to illustrate
# the intersection of two data frames

# Data frame 1
data_x <- data.frame(x1 = c(2, 3, 4),
                     x2 = c(1, 1, 1))

# Data frame 2
data_y <- data.frame(y1 = c(2, 3, 4),
                     y2 = c(2, 2, 2))

# Intersection of two data frames
data_z <- intersect(data_x, data_y)

print(data_z)

Output:

  y1
1  2
2  3
3  4