How to read lines from cell
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this time I'm trying to process data from a .txt file.
my goal is to extrat the information at specific lines.
I load my file
temp3 = regexp(fileread('DT_Diagra_ScanTool_DT62234_T0410_SHAP_001.txt'), '\r?\n', 'split')';
I got a 680x1 cell
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1728501/image.png)
I made and index to find the line in whic is the value I wnat.
idc = strfind(temp3,'PID 01');
idx = ~cellfun('isempty',idc);
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1728506/image.png)
is there any way to get all the '0' and '1' in that row?
after that I will also need to get the next 4 lines below and end up getting below values
0000 0000
0000 0111
1110 0101
1110 0101
as always any feedback will be high appreciated
2 Comments
dpb
on 6 Jul 2024
As always, attach a sample text file itself...more than likely you can read the file directly avoiding the cells, but without the file to work with, we're shooting in the dark...
Accepted Answer
Stephen23
on 8 Jul 2024
S = readlines('T04102.txt');
X = find(startsWith(S,'PID 01'));
F = @(x) regexp(S(x:x+3),'[01]{4}\s+[01]{4}','once','match');
C = arrayfun(F,X, 'uni',0);
C{:}
More Answers (1)
Matlab Pro
on 7 Jul 2024
Hi @A-Rod
Anyhow -I have imitated your data:
Look at the solution below
I assume that temp3 is a cellarray
I have used "contains" function instead of "strfind"
The rest - extract relevant data
% Imitating the READ output of the file
temp3 = repmat({''}, 680,1);
temp3{215} = 'PID 01000 000MIL on; fault code entries';
temp3{216} = '0000 0100';
temp3{217} = '0000 0000';
temp3{218} = '0000 0000Monitor status since DTCs cleared';
% Extracting data
idx = cell2mat(cellfun(@(x) contains(x, 'PID 01'),temp3,'uni',0));
i1 = find(idx);
for iLine = 0:3
re = regexp(temp3{i1+iLine},'\d+\s+\d+','match');
line1 = re{1}; % get all the '0' and '1' in that row
disp(line1);
end
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