iterate through text files and read them as a matrix

myfolderinfo=dir('dense_gnm_random_graph');%dense_gnm_random_graph is the folder which contains text files

N=length(myfolderinfo);

for i = 3:N

thisfile= myfolderinfo(i).name

A = readmatrix('thisfile','Whitespace',' []');

and these are the errors i got

Error using readmatrix (line 148)

Unable to find or open 'thisfile'. Check the path and filename or file permissions.

Error in final (line 6)

A = readmatrix('thisfile','Whitespace',' []');

Answer 1

[Turlough Hughes]

You have to make sure your filename and path are correct. Try modifying your input to readmatrix as follows:

A=readmatrix([myfolderinfo(i).folder '\' myfolderinfo(i).name],'Whitespace','[]')

[Turlough Hughes]

Did you try this?

[Nitish Reddy Kotkur]

yes it did work can you help me with this

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]]

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.

[Turlough Hughes]

Seeing as you've dedicated a question to the above I commented on that thread. Generally speaking I would opt to get the data in a nice format first rather than trying to solve afterwards. How are you generating the data? Or has it just been given to you?