Logging data obtained from txt file

Question

I'm currently a beginner in Python, and I'm currently working on obtaining data from a txt file and producing a graph for log(x) vs log(y).

This was the basic code, where it would plot the data from the txt file.

data = loadtxt ("values.txt", float)
plot(data[:,0],data[:,1])
show()

Graph produced:

However, I want to log both x and y. How do I approach this?

Answer 1

Check this out.

import numpy as np

data = loadtxt ("values.txt", float)

x_data = np.log(data[:,0]) # here we are logging over the whole n-dimensional array
y_data = np.log(data[:,1])

plot(x_data, y_data)
show()