# 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)
```
[1] 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]  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)
```
[1] 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:
[1]  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

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”.

## Author

• With close to 10 years on Experience in data science and machine learning Have extensively worked on programming languages like R, Python (Pandas), SAS, Pyspark.

https://www.linkedin.com/in/sridhar-venkatachalam-74414252/ karaimadai@sg2plcpnl0204.prod.sin2.secureserver.net Venkatachalam Sridhar