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Originally published in Queue vol. 7, no. 9
see this item in the ACM Digital Library



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(newest first)

mythsmith | Fri, 10 Jan 2014 13:59:17 UTC

Try to read a 10x10 pixel square in the middle of 10vx10v pixel matrix from a text/xml file. I suppose you will have to wait a long time or write very complex code to read exactly and only that square. In hdf this is straightforward. So, until the data is small, +1 to plain files. When it becomes extremely complex, and you may need to quickly access custom slices of it at a time, +100 to hdf.

Bob | Wed, 27 Jun 2012 21:48:52 UTC

hdf5 is a terrible format to work with. Extracting data from an hdf file is cumbersome and slow, code is difficult to write. Who wants to navigate through hierarchichal tree structures to get to a dataset? Do not promote this ancient format. Much simpler to use plain flat files with xml based file format descriptions. Now that is trivial.

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