/Python/How to convert a dense matrix into sparse matrix in python

How to convert a dense matrix into sparse matrix in python

# dense to sparse
from numpy import array
from scipy.sparse import csr_matrix
# create dense matrix
A = array([[1, 0, 0, 1, 0, 0], [0, 0, 2, 0, 0, 1], [0, 0, 0, 2, 0, 0]])
print(A)
# convert to sparse matrix (CSR method)
S = csr_matrix(A)
print(S)
# reconstruct dense matrix
B = S.todense()
print(B)

Similar codes

0 vote168 views1 answer
Reate the "soup." This is a beautiful soup object:
Python
4 votes167 views2 answers
Flask get variable from url
Python
0 vote175 views1 answer
Python check if hotkey pressed
Python
0 vote153 views3 answers
How to add list in javascript
Python
0 vote161 views1 answer
Pandas dataframe row names
Python
0 vote158 views1 answer
Python import environment variables
Python
0 vote169 views1 answer
Setting urls
Python
0 vote163 views1 answer
Tkinter radiobutton "bind_all"
Python
0 vote170 views1 answer
How to make a numpy array of certain values
Python
0 vote149 views1 answer
Python pyqt5 checkbox trigger
Python