When load matrices from mat file in python using scipy.io, it makes dictionary where key is name of matrix,and value is 2D array of that matrix.
How can i access elements in this array?
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3 Answers
Suppose you have
mat = sio.loadmat('a.mat')
Then you can see which matrices were loaded by
print mat
For each key key in the dictionary, you can retrieve the corresponding matrix by
my_matrix = mat[key]
my_matrix is a 2d array representing the matrix. So to get row 0 of the matrix, you would use my_matrix[0], and to get element(0,0) of the matrix, you would use my_matrix[0][0].
Here's a nice tutorial you can use for other basic functionality.
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Doesn't
matrix[x][y]
work?
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>>> A = array([ [1,2], [3,4], [5,6]])
>>> A
array([[1, 2],
[3, 4],
[5, 6]])
>>> A[0]
array([1, 2])
>>> A[0][0]
1
Here A can be a value in the dict object you have created.
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