How can I read a specified, comma seperated text (txt) file line-byline?
1 visualizzazione (ultimi 30 giorni)
Mostra commenti meno recenti
I need to just read the 3 following numerical value from a text file using sscanf line by line:
0.3616813421 V,0 counts,500 ms
0.3567937374 V,0 counts,500 ms
0.3616813421 V,0 counts,500 ms
0.3616813421 V,0 counts,500 ms
0.3665689229 V,0 counts,500 ms
.
So far i have:
fileID=fopen('data.txt','rt');
line=fgetl(fileID);
a = fscanf('line','%s %s %s');
But this doesnt seem to work and im unsure as what to do.
0 Commenti
Risposta accettata
JohnGalt
il 19 Mag 2016
Now, you say that you'd like the 3 numerical values which can be obtained by:
fileID=fopen('data.txt','r'); % I've removed the 't'
while feof(fileID)~=1
line=fgetl(fileID); % as per OP
a = cell2mat((textscan(line,'%f V,%f counts,%f ms'))); % a is a 3x1 matrix
display(a)
% do something with 'a'
end
fclose(fileID);
However, if you wanted to read the file in one go... you could use:
fileID=fopen('data.txt','r'); % I've removed the 't'
a = cell2mat(textscan(fileID,'%f V,%f counts,%f ms'));
fclose(fileID);
display(a)
There are further improvements that can be made to this code (checking that the file opens correctly, using more appropriate data types etc etc) but this should achieve what you intend.
0 Commenti
Più risposte (0)
Vedere anche
Categorie
Scopri di più su Characters and Strings in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!