Add Grid Lines to a Chart
Description:
This program adds grid lines to a bar chart to enhance the readability and alignment of total revenue per product.
Code Explanation:
● Created a bar chart to show total revenue per product.
● Used plt.grid(True) to enable grid lines on the plot.
● Grid lines help improve readability and alignment of values.
● Also added labels and title to make the chart informative.
● Used tight_layout() to avoid overlapping of chart elements.
Program:
import matplotlib.pyplot as plt
import pandas as pd
# Sample data
data = {
'OrderID': [101, 102, 103, 104],
'Product': ['Laptop', 'Tablet', 'Smartphone', 'Headphones'],
'Quantity': [2, 5, 3, 10],
'Price': [750, 300, 500, 50],
'Date': ['2025-01-01', '2025-01-01', '2025-01-02', '2025-01-02']
}
# Create DataFrame
df = pd.DataFrame(data)
# Calculate revenue
df['Revenue'] = df['Quantity'] * df['Price']
# Group revenue by product
revenue_by_product = df.groupby('Product')['Revenue'].sum()
# Plot bar chart with grid lines
plt.figure(figsize=(6, 5))
plt.bar(revenue_by_product.index, revenue_by_product.values, color='orange')
plt.title('Revenue by Product')
plt.xlabel('Product Name')
plt.ylabel('Total Revenue')
plt.grid(True) # Add grid lines
plt.tight_layout()
plt.show()
Output:
