Hi Warren & Pierre,
> Notice that your array is actually a 2D structured array with shape (n, 1).
> Try reshaping it to (n,) or apply np.squeeze before calling savetxt.
Thanks to both of you, I made huge progress to understand how numpy arrays
work. I use PyDev under Eclipse, and the debugger showed me that the vstack
function generated a 2D array. So I used append instead, and my script now
works!
Cheers
JB
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