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Reading Text Files with Numbers and String

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Hans123
Hans123 on 13 Aug 2020
Commented: Star Strider on 14 Aug 2020
Hi, this is a common question and I could not find an answer pertaining to my problem
I have attached an excerpt of my textfile in this question
my text file is built like this and I want to extract ID time and C columns, I tried dlmread and textscan but they yield errors, any help appreciated
ID#: 0 time: 6379.937500 A: 0 B: 0.000000 ; C 0.000000
% my current code
fileID = fopen('ni100khz.txt');
A=textscan(fileID, '%s %f %s %f %s %f %s %f %s %s %f %f ');
fclose(fileID);
% it doesn't scan the whole txt file
  2 Comments
Hans123
Hans123 on 13 Aug 2020
Thanks for the reply, I am working with MATLAB 2017 and it is not available for me. I have attached the format of my textfile, hope it helps. I am currently trying textscan but can't make progress

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Accepted Answer

Star Strider
Star Strider on 13 Aug 2020
Edited: Star Strider on 13 Aug 2020
Try this:
fidi = fopen('data1.txt');
A = textscan(fidi, 'ID#: %f time: %f A: %f B: %f C %f', 'Delimiter',{'\t',';'}, 'MultipleDelimsAsOne',1, 'CollectOutput',1, 'EndOfLine','\r\n');
fclose(fidi);
producing:
Am = cell2mat(A)
Am =
100 4.6563 0 0 0
100 4.6875 0 0 0
100 4.6875 614 3.001 30.01
EDIT —
To extract ‘ID#’, ‘time:’ and ‘C’ only:
A = textscan(fidi, 'ID#: %f time: %f A: %*f B: %*f C %f', 'Delimiter',{'\t',';'}, 'MultipleDelimsAsOne',1, 'CollectOutput',1, 'EndOfLine','\r\n');
The rest of the code is unchanged.
.
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