Converting txt file into title and array?

1 Ansicht (letzte 30 Tage)
Darren Miller
Darren Miller am 12 Mai 2020
Kommentiert: Darren Miller am 13 Mai 2020
I am trying to load a txt file that looks like this:
Time (s)
0
1.5
1.6
2
2.5
3.5
4
and I want to save the first line as a string to be used for the xlabel on a plot, and the n lines of numbers afterwards I would like to save as an array.
I tried to use something like this and it did not work:
xL = fscanf(fid,'%s');
fgetl(fid); %first line of txt file is the data label I am going to use for the plot xlabel
for n = 1:dataLength % dataLength = 7 here
data(n) = fscanf(fid,'%f');
fgetl(fid);
end
The problem was the xL variable was then defined as 'Time (s)01.51.622.53.54' . It basically did not just grab one line for some reason.

Akzeptierte Antwort

per isakson
per isakson am 12 Mai 2020
Bearbeitet: per isakson am 12 Mai 2020
Try this
%%
fid = fopen( 'cssm.txt', 'rt' );
xL = fgetl( fid ); % read the first line
data = fscanf( fid, '%f' ); % read numerical data until end of file
[~] = fclose( fid );
%%
xL
data
where cssm.txt contains your data sample

Weitere Antworten (1)

Ameer Hamza
Ameer Hamza am 12 Mai 2020
On recent MATLAB releases, you can also try readtable
t = readtable('test.txt', 'PreserveVariableNames', true);
Then access data and label using this syntax
data = t{:,1}
label = t.Properties.VariableNames{1}
  1 Kommentar
Darren Miller
Darren Miller am 13 Mai 2020
This almost works perfectly, but unfortunately my txt file header has parentheses in it ( 'Time (s)') which did not get preserved for some reason. Thanks anyway though, I appreciate the help!

Melden Sie sich an, um zu kommentieren.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by