将numpy数组保存到txt

Question

I have to arrays (q, I) with different number of columns each and I want to save them in a txt file preserving the order of the columns, meaning in the txt file the arrays should be like:

q, I0, I1, I2, ...

The shape of my arrays are:

q.shape = (300, )
I.shape = (300, 12)

I tried this:

save_arrays = np.array(zip(q, I))
np.savetxt('dummy.txt', save_arrays, delimiter='\t', newline='\r\n',
        fmt='%.5f', header='q [A-1]/I [a.u.]')

The shape of save_arrays is:

save_arrays.shape = (300, 2)

It has two columns instead of 13. Those columns are the single array q and the multi-column array I.

Anyway, I'm getting this TypeError as well:

TypeError: Mismatch between array dtype ('object') and format specifier ('%.5f %.5f') 

Any help is appreciated.

Answer 1

尝试save_arrays = np.hstack((q[:,np.newaxis],I))