Floor and ceiling in R

Floor and ceiling in R is demonstrated with examples in this chapter. floor() function takes the vector or column of the dataframe in R and rounds down those values. ceiling() function takes the vector or column of the dataframe in R and rounds up those values

• floor(x) function in R rounds to the nearest integer that’s smaller than x.
• ceiling(x) function in R rounds to the nearest integer that’s larger than x

Syntax of floor() function:

floor(x)
• x – numeric value or vector or column of a dataframe to be rounded down

Syntax of ceiling() function:

ceiling(x)
• x – numeric value or vector or column of a dataframe to be rounded up

Example of floor() function in R:

floor() function takes up the value as an argument and rounds down that values  without decimal places, so as no decimal values left

# floor function in R

floor(125.2395)
 125

Example of floor() function in R for a vector:

floor() function takes up the vector as an argument and rounds down all the values  of that vector without decimal places, so as no decimal values left

# floor function in R for vector

floor(c(1.234,2.342,4.562,5.671,12.345,14.567))
output:
  1  2  4  5  12  14

Example of ceiling() function in R:

ceiling() function takes up the value as an argument and rounds up that values  without decimal places, so as no decimal values left

# ceiling function in R

ceiling(125.2395)
 126

Example of ceiling() function in R for a vector:

ceiling() function takes up the vector as an argument and rounds up all the values  of that vector without decimal places, so as no decimal values left

# ceiling() function in R for vector

ceiling(c(1.234,2.342,4.562,5.671,12.345,14.567))
output:
  2  3  5  6  13  15

Example of floor()  and ceiling() function in the R dataframe

First lets create a dataframe

#### Create dataframe in R

Price = c(100.981,80.643,80.223,90.3,65.3,71.9,62.2,71.3,25.1,62.9,41.9,35.7,50.9,121.7))

so the resultant dataframe will be Example of floor function of column of a dataframe :

In the below example floor() function is applied to the column of a dataframe in which it takes up the column value as argument. which rounds down the column value without any decimal place.

# floor the decimal places - with R floor() function

so in the resultant dataframe “price” column will be rounded down without decimal places and stored in another column named “floored” Example of ceiling function of column of a dataframe :

In the below example ceiling() function is applied to the column of a dataframe in which it takes up the column value as argument. which rounds up the column value without any decimal place.

# ceil the decimal places - with R ceiling() function 