Create a Simple Bar Plot of five Subjects' marks in R

R Programming: Basic Exercise-21 with Solution

Write a R program to create a simple bar plot of five subjects marks.

Sample Solution :

R Programming Code :

# Define a vector of marks for the 4 subjects
marks = c(70, 95, 80, 74)

# Create a bar plot with the specified marks
barplot(marks,
  
  # Set the title of the bar plot
  main = "Comparing marks of 5 subjects",
  
  # Label the x-axis as "Marks"
  xlab = "Marks",
  
  # Label the y-axis as "Subject"
  ylab = "Subject",
  
  # Set the names of the bars
  names.arg = c("English", "Science", "Math.", "Hist."),
  
  # Set the color of the bars to dark red
  col = "darkred",
  
  # Ensure the bars are vertical
  horiz = FALSE)

Output:

Explanation:

• marks = c(70, 95, 80, 74)
• Creates a vector marks containing the values 70, 95, 80, and 74, which represent the marks for four subjects.
• barplot(marks,
• Calls the barplot function to create a bar plot of the marks vector.
• main = "Comparing marks of 5 subjects",
• Sets the title of the bar plot to "Comparing marks of 5 subjects."
• xlab = "Marks",
• Labels the x-axis as "Marks."
• ylab = "Subject",
• Labels the y-axis as "Subject."
• names.arg = c("English", "Science", "Math.", "Hist."),
• Provides names for each bar in the plot, corresponding to the subjects: English, Science, Math, and History.
• col = "darkred",
• Sets the color of the bars to dark red.
• horiz = FALSE
• Specifies that the bars should be vertical (not horizontal).

R Programming Code Editor:

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