Converting a text file into strings and integers

I have .txt input files with a very simple structure, of which I attach an example. I want to convert its content in strings and integers. My code below works, but I was wondering if there is a faster option than "textread", which seems to be the weak point.
[pattern, text, d] = textread('dataset.txt', '%s %s %d');
pattern = cell2mat(pattern(1));
text = cell2mat(text(1));

2 comentarios

Paolo Binetti
Paolo Binetti el 19 de Dic. de 2016
that textread is not recommended, but it does not say why and textscan does not seem to work in the same way. I have actually tried implementing textscan but I did not figure it out. Amazing how much time one can lose with I/O ...
textscan is more flexible.

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Walter Roberson
Walter Roberson el 19 de Dic. de 2016

1 voto

Is there only the one set of values for each file? If so then probably a few fscanf() would be faster.

3 comentarios

Paolo Binetti
Paolo Binetti el 19 de Dic. de 2016
Thank you but I am not sure I understand your question. I have attached a file example. That is exactly the file I want to read (except that the string on the second row would be much longer).
fid = fopen('dataset.txt');
pattern = fscanf(fid, '%s', 1);
txt = fscanf(fid, '%s', 1);
d = fscanf(fid, '%f', 1);
fclose(fid);
Paolo Binetti
Paolo Binetti el 21 de Dic. de 2016
Thank you: 5 times faster on my sample, noticeably faster on larger files, no longer the slowest piece of code in my algorithm.

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el 19 de Dic. de 2016

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el 21 de Dic. de 2016

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