Hi all,
I created a table:
>>> joins.createTable('/','spikes',{'t20k':pt.Int32Col(),'tetrode':pt.UInt8Col(),
>>> 'unit':pt.UInt8Col()},'Spike times')
I populated it
>>> joins.root.spikes.append(zip(np.arange(100),np.zeros(100), 3*np.ones(100)))
now if I do
>>> joins.root.spikes.cols.tetrode[:] = np.ones(100)
I can see the updated value (all ones instead of zeros)
If I fetch all the table in memory,
>>> joins.root.spikes[:]
I still see only the original zeros, i.e. the column update has not propagated
If I add another 100 rows like above and check
joins.root.spikes.cols.tetrode, then I only see the original ones, and
not the added zeros
In the middle I .flush() table and file abundantly; that changes nothing.
This I did following the instruction in
http://www.pytables.org/moin/HintsForSQLUsers
(search for the line:
tbl.cols.temperature[6:13:3] = cols[0]
)
Is this the intended behaviour? It's driving me crazy.
However
>>> joins.root.spikes.col('tetrode')
sees the same as joins.root.spikes[:]
but cannot be assigned to.
Álvaro.
-á.
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