Displaying random image from array of file names

I am trying to figure out how to take an array of png image files and then have MATLAB randomly select one of the file names and then display it.

For example we have an array called red_shirts with 4 png files listed across the first row (4x1). We really have no idea how to go about solving this issue. Any help would be extremely appreciated!!!

We tried:

x=1:length(red_shirts)
y=rand(x)
n=imread(red_shirts(y).name);
imshow('n');
end

Answer 1

[Image Analyst]

Try this:

red_shirts = dir('*.png');
numberOfImages = length(red_shirts)
randomIndex = randi(numberOfImages)
randomImage = imread(red_shirts(randomIndex).name);
imshow(randomImage);

Answer 2

[David Fletcher]

I have no idea what structure you have your image file names stored in, so I can only give an example of something that does work (with the file names stored in a basic cell array):

red_shirts=[{'one.png'} {'two.png'} {'three.png'} {'four.png'}]

y=randi([1 length(red_shirts)]])

image=imread(red_shirts{y});
imshow(image)

[Image Analyst]

Since red_shirts is a structure with a "name" field, it came from calling the dir() function.