Extract vector from dataframe in R

In this article, we will see how to extract vectors from DataFrame in R Programming Language.

The approach is simple, by using $ operator, we can convert dataframe column to a vector.

Syntax:

dataframe_name$columnname

Given below are various examples to implement the same

Example 1:

R

# create vector with names
name=c("sravan","mohan","sudheer","radha","vani","mohan")

# create vector with subjects
subjects=c(".net","Python","java","dbms","os","dbms")

# create a vector with marks
marks=c(98,97,89,90,87,90)

# create vector with height
height=c(5.97,6.11,5.89,5.45,5.78,6.0)

# create vector with weight
weight=c(67,65,78,65,81,76)

# pass these vectors to the data frame
data=data.frame(name,subjects,marks,height,weight)

# display dataframe
print(data)

# access vector from dataframe column name
a=(data$name)
print(a)

# access vector from dataframe column marks
b=(data$marks)
print(b)

Output:

Example 2:

R

# create vector with height
height=c(5.97,6.11,5.89,5.45,5.78,6.0)

# create vector with weight
weight=c(67,65,78,65,81,76)

# pass these vectors to the data frame
data=data.frame(height,weight)

# display dataframe
print(data)

# access vector from dataframe column
# weight
a=(data$weight)
print(a)

# access vector from dataframe column
# height
b=(data$height)
print(b)

Output: