read matrix from .txt

2013 10 20
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更新时间：2013 10 20
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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 :)

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Azzi Abdelmalek
Azzi Abdelmalek 2013-10-20

4 个投票

M=dlmread('filename.txt')

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lucas
lucas 2013-10-20
编辑：lucas 2013-10-20
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
Azzi Abdelmalek 2013-10-20
编辑：Image Analyst 2013-10-20
From your post, your file contains a matrix of numbers, is it true? Maybe your file contains also characters.
lucas
lucas 2013-10-20
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
lucas 2013-10-20
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
Azzi Abdelmalek 2013-10-20
You can import your data from your Excell file with xlsread. If your txt file contains only numbers, the code should work.
lucas
lucas 2013-10-20
but my homework asked me to read .txt haha :(
Image Analyst
Image Analyst 2013-10-20
Alternatively, try importdata() or save from Excel as a CSV file instead.
Cedric
Cedric 2013-10-20
编辑：Cedric 2013-10-20
Open your file with e.g. the notepad or MATLAB editor, and copy/paste the content here, using {}Code formatting.
Image Analyst
Image Analyst 2013-10-20
Or better yet, just attach the whole file with the paperclip icon.
Cedric
Cedric 2013-10-20
编辑：Cedric 2013-10-20
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
lucas 2013-10-20
thx mate!! works fine now with that comma thing :)

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