Accessing User Data in Standalone App

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Zachary Kalmanson 2022-9-24

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评论： Zachary Kalmanson 2022-9-27

I have created an app that I plan to compile as a standalone executable, but I have run into an issue regarding how to access user data. The app is an image processing algorithm that allows the user to analyze a folder of images on their computer. Originally I had the program add the user's folder to the matlab path using uigetdir, although this has run into issues once I compile the app. I know that modifying the path of a compiled app causes issues, so I am wondering how would I be able to read in a folder of images from the user's computer?

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Answer 1

Turlough Hughes 2022-9-24

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app1.mlapp

You can store image paths in a property in your app (see imageFiles in the attached .mlapp file) and then use that to load the images.

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Turlough Hughes 2022-9-24

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Assuming they're all png's (simply for the purpose of demonstration), you can write the following

app.imageFiles = dir(fullfile(userSelectedFolder,'**','*.png'))

This will scan down all the subfolders for png's.

Zachary Kalmanson 2022-9-27

Thank you for the help. I have one follow up question if you don't mind. I see that the imageFiles data structure stores the file names as well as the folder they came from, but its in one big list. is it possible to seperate them so that the images from each subfolder are stored in a seperate imageFiles structure? Otherwise I am not sure how I would reference the images from each subfolder.

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