reading large text files into matrix

2 Ansichten (letzte 30 Tage)
Nitish Reddy Kotkur
Nitish Reddy Kotkur am 20 Okt. 2019
Beantwortet: Stephan am 21 Okt. 2019
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.
  4 Kommentare
dpb
dpb am 20 Okt. 2019
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 am 20 Okt. 2019
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.

Melden Sie sich an, um zu kommentieren.

Antworten (1)

Stephan
Stephan am 21 Okt. 2019
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', ''})));

Kategorien

Mehr zu Matrices and Arrays finden Sie in Help Center und File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by