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pythonarraysnumpymatrix
Roulbacha
Roulbacha

Reputation: 467

Read numpy array(matrix) fast from text file

I am having trouble to read a matrix from a text file to a numpy array very fast without any unnecessary copying.

The format is the following:

3   
1   -1  6   5   9   7   0   -7  
0   -5  -5  3   -7  -2  4   3   
-2  -9  -5  6   6   -2  -9  9   
-7  -3  3   -3  3   8   8   -8  
9   3   5   2   -2  4   6   5   
-1  -8  7   -4  -1  3   7   4   
0   -4  -8  -3  2   6   2   -2  
-1  8   6   5   9   8   0   6

The first line (3) indicates the size of the matrix i.e here it is 2^3 = 8x8 matrix

Each column is separated with a \t character and each line is separated with a \n character.

I have tried numpy.loadtxt(), I can specify the row delimiter, skip the first row (the 3) but then I need to specify a column delimiter. Can anyone help please?

Upvotes: 0

Views: 542

Answers (1)

Roulbacha
Roulbacha

Reputation: 467

@juanpa the loadtxt(path, skiprows=1) works perfectly, thank you so much!

Upvotes: 1

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