Matlab .txt文件分析 [英] Matlab .txt file analyses

问题描述

我正在分析.txt文件中的一组文本.该文件有30行，每行包含不同的短语，均包含文本，数字和符号.

I am analyzing a set of text in a .txt file. the file has 30 lines and each line contains different phrases both containing text, numbers, and symbols.

1. 将文件导入Matlab进行分析的最佳方法是什么 (即:文本文件中有多少个大写字母或文件中有多少个#text短语(分析每行上的推文)

1. what's the best way to import this file into Matlab for analyses (i.e.: how many Capital I's are in the text file or how many #text phrases are in the file (analyzing tweets on each line)

推荐答案

我认为您最好阅读文件

I think you'd best read the file line-by-line and save each line in a cell of a cell array:

fid = fopen(filename);
txtlines = cell(0);
tline = fgetl(fid);
while ischar(tline)
    txtlines{numel(txtlines)+1}=tline;
    tline = fgetl(fid);
end
fclose(fid);

这样，您可以使用txtlines{ii}轻松访问每一行.

This way you can easily access each line with txtlines{ii}.

如果您始终需要对全文进行操作(即，整个文本文件中有多少个a，而不是每行)，那么您当然可以将这些行放到一个变量中.

If you always need to perform operations on the complete text (ie how many a's in the whole text-file, and not per-line), you can of course just throw the lines together in a single variable.

执行每行操作，只需使用 cellfun cellfun ，例如计算大写字母"I"的数量:

Executing an operation on each line, can be done simply with cellfun, for example counting the number of capital 'I's:

capI_per_line = cellfun(@(str) numel(strfind(str,'I')),txtlines);

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