[Numpy-discussion] unpack argument in loadtxt/genfromtxt does not work as documented

Pierre GM pgmdevlist@gmail....
Thu Oct 7 08:59:23 CDT 2010


On Oct 7, 2010, at 3:49 PM, Benjamin Root wrote:
> 
> I understand the technicalities of why this occurs, but from a user's perspective, he is asking for distinct numpy arrays of specified types.  The transposing seems to be almost an unimportant implementation detail because the user is asking for the data to be split up by columns.  Personally, I think that this should be transparent to the user and should be able to work -- although I am not exactly sure if one should just simply return a list of numpy arrays with the column names dropped, or a list of one-column record arrays.

Well, easy enough to output a list of arrays for each column, be they of the same dtype or with different ones.


> If it can't quite work from within the framework for genfromtxt/loadtxt, then maybe another text loading function that is designed to have the data format known a priori would be suitable?  

Not needed. The unpack argument is used as the very end of the function anyway.
Anyhow, could you open a ticket to that effect (else I'm quite likely to forget about it).

> Note that such a function might also be sufficient in addressing my long-standing qualm with loadtxt()'s squeeze behavior for files with only one line of data.

Mind opening a second a ticket ?




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