+- Python Forum (https://python-forum.io)
+-- Forum: Python Coding (https://python-forum.io/forum-7.html)
+--- Forum: Data Science (https://python-forum.io/forum-44.html)
+--- Thread: When dividing elements of matrix i would like the result 0 instead of inf? (/thread-19967.html)
When dividing elements of matrix i would like the result 0 instead of inf? - Koczkodan - Jul-22-2019
Hi,
While dividing element from first matrix by second matrix value 0 I need result to be 0 instead of inf.
example:
1 1
2 6
divided by
1 0
4 3
should be
1 0(now got inf)
0,5 2
import numpy as np
np.savetxt("result.txt", np.divide(np.loadtxt("1.txt"), np.loadtxt("2.txt")))
m1, m2 = np.loadtxt("1.txt"), np.loadtxt("2.txt")
result = np.divide(m1, m2)
RE: 0 instead of inf - scidam - Jul-22-2019
It is normal that division by zero yields infinity, i.e. inf (floating point).
However, you can change all infs to zeros, e.g.
result[np.isinf(result)] = 0.0
RE: 0 instead of inf - Koczkodan - Jul-22-2019
(Jul-22-2019, 09:41 AM)scidam Wrote: It is normal that division by zero yields infinity, i.e. inf (floating point).
However, you can change all infs to zeros, e.g.
result[np.isinf(result)] = 0.0
still got inf in result :/
RE: 0 instead of inf - DeaD_EyE - Jul-22-2019
You have to do this after the calculation.
RE: 0 instead of inf - Koczkodan - Jul-22-2019
(Jul-22-2019, 11:19 AM)DeaD_EyE Wrote: You have to do this after the calculation.
I think I did:
import numpy as np
np.savetxt("result.txt", np.divide(np.loadtxt("1.txt"), np.loadtxt("2.txt")))
m1, m2 = np.loadtxt("1.txt"), np.loadtxt("2.txt")
result = np.divide(m1, m2)
result[np.isinf(result)] = 0.0maybe sth else is wrong? I'm not a coder just need this to work so that you for your patience