在MATLAB中使用逗号十进制分隔符读取txt文件 [英] Read txt file with comma decimal separator in MATLAB

问题描述

我有一个这样的txt文件:

I have a txt file as such:

1,6 2 6,5 5 ...  // ~ 1000 columns 
0 1 4 2,5 ...
... // ~1000 rows

即，"作为小数点分隔符，而不是."

that is, "," as a decimal separator instead of "."

如何在MATLAB中正确阅读以输出如下信息:

How to read this properly in MATLAB to output as such:

1.6 2 6 5 ...
0 1 4 2.5 ...
...

推荐答案

没有简单的内置方法(令人惊讶！).您需要读取整个文件，然后替换字符串，然后将结果转换为数字.

There is no easy built-in way of doing this (surprisingly!). You'll want to read in the entire file, then do a string replacement, and then convert the result into numbers.

% Read file in as a series of strings
fid = fopen('data.txt', 'rb');
strings = textscan(fid, '%s', 'Delimiter', '');
fclose(fid);

% Replace all commas with decimal points
decimal_strings = regexprep(strings{1}, ',', '.');

% Convert to doubles and join all rows together
data = cellfun(@str2num, decimal_strings, 'uni', 0);
data = cat(1, data{:});

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