Modified 'cdfread' in the part for reading from AWS S3 to allow anonymous access for datasets such as NASA TOPS. If users do not have an AWS access, the try/except then re-fetches the data using the anonymous/unsigned. Tested on HelioCloud's public 2PB data store at s3://gov-nasa-hdrl-data1/, also useful for people with their own S3 datasets. Does not affect nor break any non-S3 functionality.
Modified 'cdfread' in the part for reading from AWS S3 to allow anonymous access for datasets such as NASA TOPS. If users do not have an AWS access, the try/except then re-fetches the data using the anonymous/unsigned. Tested on HelioCloud's public 2PB data store at s3://gov-nasa-hdrl-data1/, also useful for people with their own S3 datasets. Does not affect nor break any non-S3 functionality.