reading large text files into matrix

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Nitish Reddy Kotkur
Nitish Reddy Kotkur 2019-10-20
回答： Stephan 2019-10-21
im trying to read a text file containing matrix
A = readmatrix('output1.txt','Whitespace',' []'); when i execute it
its displaying
NaN NaN
NaN NaN
NaN NaN
NaN NaN
here output1.txt file contains data in the given manner
[[0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
1 0 0 0 0 0 0 0 0 0 0 0 0 0]
[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0]
[0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0]
[1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 1 0 1]
[0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0]
[0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0]]-50*50
what else changes can i make .
BTW it worked fine when matrix size is low i.e when every row of matrix is displayed in single line but as size of matrix increases single row is being displayed in multiple lines thats when problem arised.
i have attached the text file.
can some one modfy this A = readmatrix('output1.txt','Whitespace',' []');
so it can read matrix from the file irrespective of how large it is.
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显示 2更早的评论
dpb
dpb 2019-10-20
If going to do it that way, though, might as well just use .mat file format.
It's not clear the "why" behind this scheme so hard to generalize best solution -- but the one started down is probably not it.
Turlough Hughes
Turlough Hughes 2019-10-20
I somehow doubt the data was generated in matlab. My comment is just to demo how easy it is to read data similar to Nitish's if it's formatted beforehand.

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回答（1 个）

Stephan
Stephan 2019-10-21
As already stated in the other question you asked with the same content, a possible way is:
A = readcell('output1.txt');
B = str2num(char(replace(split(string([A{:,1}]),']'),...
{'00', '10', '01', '11', '['},{'0 0', '1 0', '0 1', '1 1', ''})));

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