Question

我有大文本文件，里面有很多信息。我只需要访问一个以'***'标记的行。该行包含17个数字，它们之间有空格。

文件示例是，

Msg count = 2629    
max send msg count = 34     
avg send msg count = 10.27  
imbalance send msg count = 3.31     
------------------------------  
max recv msg count = 35     
avg recv msg count = 10.27  
imbalance recv msg count = 3.41

***1.100020 306852 1381937 11045 5398.19 2.05 10465 5398.19 1.94 2629 34 10.27 3.31 35 10.27 3.41 0.000000


[INFO]  +++ Sat Sep 24 15:15:33 2016 
+++ (test.c:816) stat1 end

有办法做到这一点吗？

Answer 1

尝试使用此代码：

infilename = 'nameoffile.txt'; % name of your file
m = memmapfile(infilename);  % load file to memory (and after close it)
instrings  = strsplit(char(m.Data.'),'\n','CollapseDelimiters',true).';

checkstr = '***';
% find all string (their indices) starting with checkstr 
ind = find(strncmpi(instrings,checkstr,length(checkstr)));


if isempty(ind)
   fprintf('\n No strings with %s',checkstr)
else
   % first string with string checkstr
   instrings(ind(1)); 
end

从.txt文件中读取特定行

1 个答案: