How to read strings and numbers in a text file?
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Ravindu Lokuliyana
le 15 Nov 2018
Commenté : Ravindu Lokuliyana
le 19 Nov 2018
Hi there,
I got an attached type text file which needs to read the content, set them into variables and rewrite the text file again.
E.g. read 'A' in the text file as a variable and change its value into '2' and rewrite the text file. Same procedure should conduct to B,C,Trail01 and Trial02.
Can anyone help me to solve the problem using this example file?
2 commentaires
jonas
le 15 Nov 2018
You should probably use regexprep, but I don't understand what you are trying to do. Can you upload a "solution" that you've formatted manually?
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Jan
le 16 Nov 2018
Modifié(e) : Jan
le 16 Nov 2018
% Import the file:
key = 'SET LEVEL';
new = 5.0;
file = 'Test01.txt'
cstr = strsplit(fileread(file), '\n');
% Find and replace the wanted line:
match = strncmpi(cstr, key, length(key));
cstr{match} = sprintf('%s %g', key, new);
% Write the file:
[fid, msg] = fopen(file, 'w');
if fid == -1, error('%s', msg); end
fprintf(fid, '%s\n', cstr{:});
fclose(fid);
The part "Same procedure should conduct to B,C,Trail01 and Trial02" is not clear to me, but it should not be hard to modify the above code to your needs.
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