Converting a text file into strings and integers

조회 수: 2 (최근 30일)
Paolo Binetti
Paolo Binetti 2016년 12월 19일
댓글: Paolo Binetti 2016년 12월 21일
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));
  댓글 수: 2
Paolo Binetti
Paolo Binetti 2016년 12월 19일
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 ...
Walter Roberson
Walter Roberson 2016년 12월 20일
textscan is more flexible.

댓글을 달려면 로그인하십시오.

채택된 답변

Walter Roberson
Walter Roberson 2016년 12월 19일
Is there only the one set of values for each file? If so then probably a few fscanf() would be faster.
  댓글 수: 3
Walter Roberson
Walter Roberson 2016년 12월 20일
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 2016년 12월 21일
Thank you: 5 times faster on my sample, noticeably faster on larger files, no longer the slowest piece of code in my algorithm.

댓글을 달려면 로그인하십시오.

추가 답변 (0개)

카테고리

Help CenterFile Exchange에서 Text Data Preparation에 대해 자세히 알아보기

태그

아직 태그를 입력하지 않았습니다.

Community Treasure Hunt

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

Start Hunting!

Translated by