In Python, a string that denotes a numeric matrix can be transformed into a two-dimensional array using the following steps:
Split the string into rows using the newline character as the delimiter, and store the result as a list of strings representing each row.
Split each row string into individual values using a space character as the delimiter, and store the result as a list of strings representing each value in the row.
Convert each value string to a numeric float using the float()
function.
Create a two-dimensional array using the numpy
library and the np.array()
function, passing the list of row lists as the input.
Return the resulting array.
Here is an example implementation in Python:
import numpy as np
def parse_matrix(matrix_string):
rows = matrix_string.split("\n")
matrix = []
for row in rows:
values = [float(val) for val in row.split(" ")]
matrix.append(values)
return np.array(matrix)
With this function, you can parse a matrix string like this:
matrix_string = "1.0 2.0 3.0\n4.0 5.0 6.0\n7.0 8.0 9.0"
matrix_array = parse_matrix(matrix_string)
print(matrix_array)
Output:
array([[ 1., 2., 3.],
[ 4., 5., 6.],
[ 7., 8., 9.]])
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Asked: 2023-05-30 15:49:48 +0000
Seen: 7 times
Last updated: May 30 '23
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