[Pytables-users] Determining effect of compression

[Alvaro T. C. <al...@mi...>]

Hi,

Trying to evaluate compression filters, I was looking for a call in
PyTables to get the size of a dataset (in bytes). As I didn't find it
I remembered the many benchmarks and found instead [1] that the way to
do it is to create single-dataset files and interrogate the
filesystem. Curiously enough, I didn't find that feature either in
h5ls, hdfview or ViTables. Is there a structural reason why this size
cannot be computed from library calls?

-á.

[1] https://github.com/PyTables/PyTables/blob/master/bench/blosc.py