Create a matrix from a text file - python

Question

I would like to create a matrix from a three column file. I am sure it\'s something extremely easy, but I just do not understand how it needs to be done. Please be gentle, I

Answer 1

Try:

import pandas as pd
import numpy as np

raw = []
with open('test.txt','r') as f:
    for line in f:
        raw.append(line.split())
data = pd.DataFrame(raw,columns = ['row','column','value'])
data_ind = data.set_index(['row','column']).unstack('column')
np.array(data_ind.values,dtype=float))

Output:

array([[ 5., 4., 3.], [ nan, 2., 1.], [ nan, nan, 0.]])