Processing sequences of images one by one

Hi all, when I process sequences of image {1.png, 2.png, 3.png, ..........,120.png}, I noted that matlab program process them like Fig.1 below {1.png, 10.png, 100.png, 101.png, 102.png, 103.png.....}. how can I make matlab process these images like fig.2 {1.png, 2.png, 3.png, ..........,120.png}. Thank for your help

Answer 1

[per isakson]

See How to sort file when reading them with dir ?