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:
- x – numeric value or vector or column of a dataframe to be rounded down
Syntax of ceiling() function:
- 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)
output:
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:
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)
output:
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:
Example of floor() and ceiling() function in the R dataframe
First lets create a dataframe
#### Create dataframe in R
my_basket = data.frame(ITEM_GROUP = c("Fruit","Fruit","Fruit","Fruit","Fruit","Vegetable","Vegetable","Vegetable","Vegetable","Dairy","Dairy","Dairy","Dairy","Dairy"),
ITEM_NAME = c("Apple","Banana","Orange","Mango","Papaya","Carrot","Potato","Brinjal","Raddish","Milk","Curd","Cheese","Milk","Paneer"),
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))
my_basket
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 my_basket$floored = floor(my_basket$Price) my_basket
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 my_basket$ceiled = ceiling(my_basket$Price) my_basket
so in the resultant dataframe “price” column will be rounded up without decimal places and stored in another column named “ceiled”.
