Problem 55770. Jack O'Lantern

• Created by Renee Coetsee
• Appears in MATLAB Fundamentals - Plotting and Visualization

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If visualized correctly, the data contained in the matrix A will look like a jack-o'-lantern.

Create a function that will visualize A as an indexed color image. Make sure the orientation of the face is correct! Remove the x-ticks and y-ticks. Change the colormap so that the background (A has the value 1) is white, the facial features (A has the value 0) are black, and the face (A has the value 0.5) is orange.

Your function should return the figure handle as output.

A simple test case:

A = [1 0.5 0.5 0.5 0.5 1;

0.5 0.5 0.5 0.5 0.5 0.5;

0.5 0 0.5 0.5 0 0.5;

0.5 0.5 0.5 0.5 0.5 0.5;

0.5 0 0.5 0.5 0 0.5;

0.5 0.5 0 0 0.5 0.5;

1 0.5 0.5 0.5 0.5 1];

smileyFace(A)

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Solution Stats

22.42% Correct | 77.58% Incorrect

• 745 Solutions
• 145 Solvers

Last Solution submitted on May 06, 2025

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