在MATLAB中比较文件 [英] compare files within MATLAB

问题描述

可能重复:
使用MATLAB比较文件

Possible Duplicate:
Compare files with MATLAB

我想使用MATLAB比较2个txt文件并在文件不相等的情况下打印差异

I would like to compare 2 txt files using MATLAB and print the diff if files aren't equal

我发现visdiff是图形工具，但我想知道是否有一些MATLAB函数进行这种比较?

I found visdiff which is graphical tool but I would like to know if there are some MATLAB function doing such comparison ?

如果文件之间存在差异，则仅打印+或-文件

if there are diff between files print only + or - files

谢谢

推荐答案

在linux/unix中，可以在Matlab中使用system()来使用bash diff. (相关文章)

In linux/unix, you can use bash diff, using system() in matlab. (related article)

它是这样的:

[content_differs, printout] = system('diff --side-by-side --left-column file1 file2');

如果file1和file2具有相同的内容，则

content_differs为0，printout为字符串.您可以逐行访问其数据(可以在matlab中使用split或通过管道传递其他命令). ' 可以根据中间的字符来分析差异.正如我所观察到的，("出于某种原因没有区别.<"，>"和"|"是指添加和更改的行.

content_differs is 0 if file1 and file2 have the same content, printout is a string. You can access its the data line-by-line (you can use split in matlab or pipe other commands). ' The differences can be parsed according to the character in the middle. As I have observed, "(" means no difference for some reason. "<", ">" and "|" refer to additions and changed lines.

(您在diff上有太多选择，也可以显示常见内容-查看此链接以获取详细信息)

(You have soo many options with diff to display common content too -- check out this link for details)

更新:

一个简单的文件解析脚本，其中显示了所有常见部分.

A simple parsing script for your file which displays all the common parts.

file1 = 'your_file.m'
file2 = 'your_other_file.m';

[is_diff,output] = system(['diff --side-by-side --left-column ',file1,' ',file2]);

lines = regexp(output, '\n', 'split');

for i=1:(length(lines)-1)
    line = lines{i};
    if line(end) == '(' % common part
        disp( line(1:(end-1)) ); 
    end
end

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