How to Use Min and Max Functions in R?

In this article, we will discuss Min and Max functions in R Programming Language.

Min:

Min function is used to return the minimum value in a vector or the dataframe.

Syntax:

In a vector:
min(vector_name)

In a dataframe with in a column:
min(dataframe$column_name)

In a dataframe multiple columns:
min(c(dataframe$column1,dataframe$column2,......,dataframe$columnn))

In a whole dataframe across all columns
sapply(dataframe,min)

Max:

Max function is used to return the maximum value in a vector or the data frame.

Syntax:

In a vector:
max(vector_name)

In a dataframe with in a column:
max(dataframe$column_name)

In a dataframe multiple columns:
max(c(dataframe$column1,dataframe$column2,......,dataframe$columnn))

In a whole dataframe across all columns
sapply(dataframe,max)

Example 1:

This example is an R program to get minimum and maximum values in the vector.

R

# create a vector
data = c(23, 4, 56, 21, 34, 56, 73)

# get the minimum value
print(min(data))

# get the maximum value
print(max(data))

Output:

[1] 4
[1] 73

Example 2:

This example is an R  program to get the minimum value and maximum value in the dataframe column.

R

# create a dataframe
data=data.frame(column1=c(23,4,56,21),
                column2=c("sai","deepu","ram","govind"),
                column3=c(1.3,4.6,7.8,6.3))

# get the minimum value in first column
print(min(data$column1))

# get the minimum value in second column
print(min(data$column2))

# get the minimum value in third column
print(min(data$column3))

# get the maximum value in first column
print(max(data$column1))

# get the maximum value in second column
print(max(data$column2))

# get the maximumvalue in third column
print(max(data$column3))

Output:

[1] 4
[1] "deepu"
[1] 1.3
[1] 56
[1] "sai"
[1] 7.8

Example 3:

This example is an R  program to get min and max values across the data frame using fapply() function. 

R

# create a dataframe
data = data.frame(column1=c(23, 4, 56, 21),
                  column2=c("sai", "deepu", "ram", "govind"),
                  column3=c(1.3, 4.6, 7.8, 6.3))

# get the minimum value across dataframe
print(sapply(data, min))

# get the maximum  value across dataframe
print(sapply(data, max))

Output:

column1 column2 column3 
    "4" "deepu"   "1.3" 
column1 column2 column3 
   "56"   "sai"   "7.8" 

Example 4:

This example is an R  program to get the max and min values among columns of the data frame.

R

# create a dataframe
data=data.frame(column1=c(23,4,56,21),
                column2=c("sai","deepu","ram","govind"),
                column3=c(1.3,4.6,7.8,6.3))

# get the minimum value in multiple
# columns of  dataframe
print(min(c(data$column1,data$column2,data$column3)))

# get the maximum  value in multiple
# columns of dataframe
print(max(c(data$column1,data$column2,data$column3)))

Output:

[1] "1.3"
[1] "sai"