Displaying random image from array of file names

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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

Accepted Answer

Image Analyst
Image Analyst on 8 Apr 2018
Try this:
red_shirts = dir('*.png');
numberOfImages = length(red_shirts)
randomIndex = randi(numberOfImages)
randomImage = imread(red_shirts(randomIndex).name);
imshow(randomImage);

More Answers (1)

David Fletcher
David Fletcher on 7 Apr 2018
Edited: David Fletcher on 7 Apr 2018
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)
  1 Comment
Image Analyst
Image Analyst on 8 Apr 2018
Since red_shirts is a structure with a "name" field, it came from calling the dir() function.

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