Reading a file without extension

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hamzah khan
hamzah khan on 28 Apr 2022
Edited: dpb on 28 Apr 2022
Hello,
I want to read a file in matlab which doesnot have an extension. I am attaching the file by converting the file to .txt file because otherwise it cannot be uploaded, originally the file doesnot have any extension and I want to read it without extension. I am using this code
cd /hamzah/adda/src/seq/results/test/run002_cylinder_g25_m1.105;
A = importdata('log')
The problem is that I want to read this file from line 1 till line 21, but when i use import data, I could only read till line 2.
Does anyone knows how it can be solved?
  1 Comment
Stephen23
Stephen23 on 28 Apr 2022
Edited: Stephen23 on 28 Apr 2022
Do not use CD to import/export data files. Using CD is slow and makes debugging harder.
All MATLAB functions that import/export data file data accept absolute/relative filenames.
Do not use PATH as a variable name (it is the name of an important function), use e.g. MYPATH.
Replace this:
[mypath '/' folders(k).name '/log']
with FULLFILE:
fullfile(mypath,folders(k).name,'log')

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Accepted Answer

dpb
dpb on 28 Apr 2022
Edited: dpb on 28 Apr 2022
Take @Stephen's comments to heart; they're important.
D='/hamzah/adda/src/seq/results/test/run002_cylinder_g25_m1.105';
txt=readlines(fullfile(D,'log.'));
will bring in the file content as a string array. As a freeform text file, the content is simply too irregular for any of the prepared file routines to be able to handle.
The other technique for such files where generally one is interested in parsing one or more specific pieces of information is to use low-level i/o and fgetl(() and then parse each line in turn.
There are a number of examples of such on the Answers forum; I don't have a specific link but I know I've written several...

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