In this article, we are going to see how to set the column names when using cbind() function in R Programming language.
Let's create and combine two vectors for demonstration:
# create two vectors with integer and string types
vector1 = c(1,2,3,4,5)
vector2 = c("sravan","bobby",
"ojsawi","gnanesh",
"rohith")
# display
print(vector1)
print(vector2)
# combine two vectors using cbind()
print(cbind(vector1, vector2))
Output:
[1] 1 2 3 4 5
[1] "sravan" "bobby" "ojsawi" "gnanesh" "rohith"
vector1 vector2
[1,] "1" "sravan"
[2,] "2" "bobby"
[3,] "3" "ojsawi"
[4,] "4" "gnanesh"
[5,] "5" "rohith"Method 1 : Set column names using colnames() function
colnames() function in R Language is used to set the names to columns of a matrix.
Syntax:
colnames(x) <- valueParameters:
x: Matrix
value: Vector of names to be set
Example: R program to set the column names using colnames() function.
# create two vectors with integer and string types
vector1 = c(1,2,3,4,5)
vector2 = c("sravan","bobby","ojsawi",
"gnanesh","rohith")
# display
print(vector1)
print(vector2)
# combine two vectors using cbind()
combined = cbind(vector1,vector2)
# Applying colnames
colnames(combined) = c("vector 1", "vector 2")
# display
combined
Output:
Method 2 : Set column names within cbind() function
Here, we have to give column names in the cbind() function itself.
Syntax: cbind(column_name = data1, column_name= data2,.........,column_name=data n)
where
- data is the input data to be combines
- column_name is the new column name.
Example: R program to set the column name within cbind() function for three vectors
# create three vectors with integer and string types
vector1 = c(1,2,3,4,5)
vector2 = c("sravan","bobby","ojsawi",
"gnanesh","rohith")
vector3 = c(12,34,21,34,51)
# display
print(vector1)
print(vector2)
print(vector3)
# combine three vectors with in cbind() function
combined = cbind("ID"=vector1,
"NAME"=vector2,"AGE"=vector3)
# display
combined
Output:
