Randomizing samples without losing track on labels

2023 9 13
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I have 5 different images data and I want to shuffle/randomize each time when displayed. I want to keep track on which image I am showing. How I can do it in matlab? For example I have images of cat, dog, cows, lions and tigers. I want to show them to users for 5 trials. How I can keep a track on their labels. Is there any data structure like keys and values in python which can be implemented in Matlab?

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Akshat Dalal
Akshat Dalal 2023-9-13

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Hi Vivek,
The dictionary object will be helpful for your problem - https://in.mathworks.com/help/matlab/ref/dictionary.html

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Vivek Raj
Vivek Raj 2023-9-16
Can you share one of the working code to facilitate understanding
Akshat Dalal
Akshat Dalal 2023-9-16
Ran in:
Ran in:
Hi Vivek,
There are many examples provided in the link. I'll attach one of them here, but you could always go back to explore more.
wheels = [1 2 3];
names = ["Monocycle" "Bicycle" "Tricycle"];
d = dictionary(names,wheels)
d = dictionary (string --> double) with 3 entries: "Monocycle" --> 1 "Bicycle" --> 2 "Tricycle" --> 3
d("Tricycle")
ans = 3
d("Bicycle") = 2.5
d = dictionary (string --> double) with 3 entries: "Monocycle" --> 1 "Bicycle" --> 2.5000 "Tricycle" --> 3
d("Car") = 4
d = dictionary (string --> double) with 4 entries: "Monocycle" --> 1 "Bicycle" --> 2.5000 "Tricycle" --> 3 "Car" --> 4
names2 = ["Truck" "Motorcycle" "Sixteen-Wheeler"];
wheels2 = [4 2 16];
d(names2) = wheels2
d = dictionary (string --> double) with 7 entries: "Monocycle" --> 1 "Bicycle" --> 2.5000 "Tricycle" --> 3 "Car" --> 4 "Truck" --> 4 "Motorcycle" --> 2 "Sixteen-Wheeler" --> 16
d("Truck") = [] % Remove entries by assigning an empty array to an existing key.
d = dictionary (string --> double) with 6 entries: "Monocycle" --> 1 "Bicycle" --> 2.5000 "Tricycle" --> 3 "Car" --> 4 "Motorcycle" --> 2 "Sixteen-Wheeler" --> 16

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