Session 14 Revision of plots and primes

We revised the math behind the prime number problem and the pseudocode for the program. We also discussed how to plot the results of a simulation using matplotlib. Specifically, we looked at how to plot a bar graph, a line graph, both on the same graph, and how to draw subplots.

Here is an example program that uses a dictionary to plot a line and bars on the same graph.

import matplotlib.pyplot as plt

# Create a simple dictionary with categories and values
data = {
    "Apples": 10,
    "Bananas": 15,
    "Cherries": 7,
    "Dates": 12,
    "Elderberries": 5,
}

# Extract keys and values for plotting
categories = list(data.keys())
values = list(data.values())

# Create the bar chart
plt.figure(figsize=(8, 5))
plt.bar(categories, values, color='skyblue', label='Value (bar)')

# Add a line plot for the same data
plt.plot(categories, values, color='darkorange', marker='o', linestyle='-', label='Value (line)')

# Add labels and title
plt.xlabel('Category')
plt.ylabel('Value')
plt.title('Dictionary Values: Bar and Line Plot')
plt.legend()
plt.grid(axis='y', linestyle='--', alpha=0.5)

# Show the plot
plt.tight_layout()
plt.show()

Homework for the next session is to generate a program for rock paper scissors.