read matrix from .txt

hello, can anyone tell me what do i have to do to read this matrix saved on a.txt file?

1 2 3 4

5 6 7 8

9 10 11 12

thx :)

Answer 1

[Azzi Abdelmalek]

M=dlmread('filename.txt')

[lucas]

hi azzi! thx for the help! but is comining back this:

*>> M=dlmread('matlab1.txt')

Error using dlmread (line 139)

Mismatch between file and format string.

Trouble reading number from file (row 1u, field 1u) ==> ÿþ1*

[Azzi Abdelmalek]

From your post, your file contains a matrix of numbers, is it true? Maybe your file contains also characters.

[lucas]

yes! i made that matrix on excel and save it to .txt

only contain this:

1 2 3 4

5 6 7 8

9 10 11 12

[lucas]

the conversion of .xls to .txt maded by excel add other things? if i open it with the notepad i see the matrix of numbers that i wrote and nothing else

1 2 3 4

5 6 7 8

9 10 11 12

[Azzi Abdelmalek]

You can import your data from your Excell file with xlsread. If your txt file contains only numbers, the code should work.

[lucas]

but my homework asked me to read .txt haha :(

[Image Analyst]

Alternatively, try importdata() or save from Excel as a CSV file instead.

[Cedric]

Open your file with e.g. the notepad or MATLAB editor, and copy/paste the content here, using {}Code formatting.

[Image Analyst]

Or better yet, just attach the whole file with the paperclip icon.

[lucas]

thx man :)

[Cedric]

Ok, there are special characters in your file, so the issue is probably the way you saved it with Excel. Try exporting the Excel file as CSV (Comma Separated Values) even if you name the file with a .txt extension.

[lucas]

thx mate!! works fine now with that comma thing :)