Labels, title, and legend in MATLAB - Mini Project: Build & Apply

Labels, title, and legend

📖 Scenario: You are analyzing sales data for two products over a week. You want to create a clear line plot to compare their sales trends.

🎯 Goal: Create a line plot with sales data for two products. Add labels for the x-axis and y-axis, a title for the plot, and a legend to identify each product's line.

📋 What You'll Learn

Create vectors for days and sales data for two products

Add x-axis label as 'Day of Week'

Add y-axis label as 'Sales Units'

Add a title 'Weekly Sales Comparison'

Add a legend with labels 'Product A' and 'Product B'

💡 Why This Matters

🌍 Real World

In business, clear charts help teams understand sales trends quickly and make better decisions.

💼 Career

Data analysts and scientists often create plots with labels, titles, and legends to communicate insights clearly.

1

Create sales data vectors

Create a vector called days with values from 1 to 7 representing days of the week. Create two vectors called salesA and salesB with these exact values: salesA = [50 60 55 70 65 80 75] and salesB = [45 55 60 65 70 75 85].

MATLAB

# Your code here

Need a hint?

Use the colon operator to create days. Assign the exact arrays for salesA and salesB.

2

Plot the sales data

Use the plot function to plot salesA and salesB against days. Use different line styles or colors for each product. Use hold on to plot both lines on the same figure.

MATLAB

days = 1:7;
salesA = [50 60 55 70 65 80 75];
salesB = [45 55 60 65 70 75 85];
% Your code here

Need a hint?

Plot salesA first, then use hold on before plotting salesB.

3

Add labels and title

Add an x-axis label with xlabel('Day of Week'), a y-axis label with ylabel('Sales Units'), and a title with title('Weekly Sales Comparison').

MATLAB

days = 1:7;
salesA = [50 60 55 70 65 80 75];
salesB = [45 55 60 65 70 75 85];
plot(days, salesA, '-o');
hold on;
plot(days, salesB, '-s');
% Your code here

Need a hint?

Use xlabel, ylabel, and title functions with the exact text.

4

Add a legend and display the plot

Add a legend with labels 'Product A' and 'Product B' using the legend function. Then use hold off to finish the plot. Finally, display the plot by running the script.

MATLAB

days = 1:7;
salesA = [50 60 55 70 65 80 75];
salesB = [45 55 60 65 70 75 85];
plot(days, salesA, '-o');
hold on;
plot(days, salesB, '-s');
xlabel('Day of Week');
ylabel('Sales Units');
title('Weekly Sales Comparison');
% Your code here

Need a hint?

Use legend with the exact labels and then hold off to finish.