Problem 55770. Jack O'Lantern

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)
Solve

Solution Stats

22.54% Correct | 77.46% Incorrect
Last Solution submitted on Jul 17, 2025

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers158

Suggested Problems

More from this Author10

Problem Tags

colormap image plot

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!