The “setenv” commands you have used are to specify your AWS access key ID, secret access key, and region of the bucket as system environment variables and are to be defined in your MATLAB Parallel Server command window as per the documentation. To access data from Amazon S3 in MATLAB, you can utilize the URL of your S3 bucket which may be generated using the S3 Browser. For instance, to read images from the S3 bucket, you can do so as follows where “s3://MyCloudData” is the URL of your bucket:
img = imread("s3://MyCloudData/FoodImageDataset/french_fries/french_fries_90.jpg");
imshow(img)
Please refer to the below link for detailed information on the steps to access data from Amazon S3 Buckets using MATLAB:
