How to create .mdb file?

Question

I am new with zarr, HDF5 and LMDB. I have converted data from HDF5 to Zarr but i got many files with extension .n (n from 0 to 31). I want to have just one file with .zarr extension. I tried to use LMDB (zarr.LMDBStore function) but i don't understand how to create .mdb file ? Do you have an idea how to do that ? Thank you !

Is there a small snippet of code you can post? As per: https://stackoverflow.com/help/minimal-reproducible-example — Quinn Mortimer, Jun 21 '19 at 12:26

score 0 · Answer 1 · answered Jun 21 '19 at 13:16

0

@kish When trying your solution i got this error:

from comtypes.gen import Access ImportError: cannot import name 'Access'

answered Jun 21 '19 at 13:16

Fatma RAHMANI

11
3

score 0 · Answer 2 · answered Jul 04 '19 at 22:43

There are some examples of using LMDB as a Zarr store in the documentation for the LMDBStore class. E.g.:

>>> store = zarr.LMDBStore('data/group.mdb')
>>> root = zarr.group(store=store, overwrite=True)
>>> foo = root.create_group('foo')
>>> bar = foo.zeros('bar', shape=(10, 10), chunks=(5, 5))
>>> bar[...] = 42
>>> store.close()  # don't forget to call this when you're done

You don't have to do anything other than the above to create the .mdb file, it will be created automatically.

I will try it, Thanks a lot – Fatma RAHMANI Jul 05 '19 at 08:38 — Fatma RAHMANI, Jul 05 '19 at 08:38

How to create .mdb file?

2 Answers2