[Numpy-discussion] Stacking arrays along new dimension in front

Gael Varoquaux gael.varoquaux@normalesup....
Tue Jul 20 04:11:09 CDT 2010


Is there in numpy a function that does:

    np.concatenate([a_[np.newaxis] for a_ in a])

?

ie: add a dimension in front and stack along this dimension, just like 

    np.array(a)

would do, but more efficient.

This is something that do all the time. Am I the only one?

Cheers,

Gaël


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