Python: Write Numpy array to a file with float precision

Question

I have a Numpy array of

a=[[ 9.9888e-01   7.6924e-04   3.5270e-04]
   [ 7.6924e-04   9.9888e-01   3.5270e-04]]

I would like to write it to file with six decimal point precision. I know that it is possible to print it to console using "%.6f", but how can I write it to file in below format:

[[  0.998878   0.000769   0.000353]
 [  0.000769   0.998878   0.000353]]

Could you tell me how to do this, please. Thanks in advance!

Daniel F · Accepted Answer · 2017-06-14 06:44:58Z

2

You can use the same format code as the fmt parameter of np.savetxt

np.savetxt('test.out', a, fmt = '%.6f')

answered Jun 14, 2017 at 6:44

Daniel F

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1 Comment

user_01 Over a year ago

Yes,exactly, why I did not consider np.savetext. Thank you @Daniel F

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