Convert DataFrame to vector in R

In this article, we will discuss how a dataframe can be converted to a vector in R. For the Conversion of dataframe into a vector, we can simply pass the dataframe column name as [[index]].

Approach:

We are taking a column in the dataframe and passing it into another variable by the selection method. Selection method can be defined as choosing a column from a data frame using ” [[]]”.

• Create a dataframe
• Apply selection process on the columns in a dataframe which is created.
• Verify the resultant variable.

Syntax:

convert_data = dataframe_name[[‘column_name’]]

Given below are implementations using this approach to produce this functionality.

Example 1:

R

# creating a vector for names
names=c('sravan','bobby','ojaswi','gnanesh','rohith','satwik')

# creating vector for marks 1
marks1=c(96,76,82,89,100,94)

# creating vector for marks 2
marks2=c(98,79,98,78,98,89)

# display all details
print(names)
print(marks1)
print(marks2)
print("----------------------")

# passing vectors to the data frame
Final_data = data.frame(names,marks1,marks2)

# display data frame
print(Final_data)
print("-------------------conversion---------------------")

# converting marks1 dataframe column into vector
# by passing as index
convert_data1 = Final_data[['marks1']]
print(convert_data1)

# converting marks2 dataframe column into vector
# by passing as index
convert_data2 = Final_data[['marks2']]
print(convert_data2)

Output:

Example 2:

R

# creating a vector for subjects
subjects=c('java','python','c/c++')

# creating vector for teachers
teachers=c('ravi','swapna','sai')

# creating vector for pass percentage
pass=c(98.11,90.45,95)

# display all details
print(subjects)
print(teachers)
print(pass)
print("----------------------")

# passing vectors to the data frame
Final_data = data.frame(subjects,teachers,pass)

# display data frame
print(Final_data)
print("-------------------conversion---------------------")

# converting subjects dataframe column into
# vector by passing as index
convert_data1 = Final_data[['subjects']]
print(convert_data1)

# converting teachers dataframe column into
# vector by passing as index
convert_data2 = Final_data[['teachers']]
print(convert_data2)

# converting pass dataframe column into vector
# by passing as index
convert_data2 = Final_data[['pass']]
print(convert_data2)

Output: