Info

此问题已关闭。 请重新打开它进行编辑或回答。

Obtain output from a text file

1 次查看（过去 30 天）
Derick Wong
Derick Wong 2014-1-3
关闭： MATLAB Answer Bot 2021-8-20
Hi all,
May I ask how do I read from a text file. The text file are mostly in binary and have a string known as DICT.
I need to output the data that is after the word DICT.

此问题已关闭。

回答（1 个）

Walter Roberson
Walter Roberson 2014-1-3
fid = fopen('Filename goes here', 'r');
fread(fid, NumberOfBytesToSkip); %eg you know DICT is at byte #17409
rest_of_file = fread(fid, inf, 'char');
fclose(fid);
If you do not know where the DICT is located, the easiest method is going to depend upon the size of the file and the amount of memory you can spare.
Do you want from 'DICT' on to end of file, or to end of line ?
Note: if the file contains binary then by definition it is not a text file; it may, though, be a binary file that in part contains text data.
  2 个评论
Derick Wong
Derick Wong 2014-1-3
编辑：Derick Wong 2014-1-3
The DICT is located near to the end of the text file, I need to read from DICT onward, which mean from DICT to the end of file.
I don't know where the DICT is located, but I do know it is from the last few lines in the text file.
The text file is in 10110101... and this goes on for hundred of lines because it is output from a huffman. Now I need to decode it by first reading the file.
I am not sure if I can count the number of bytes because the binary is in hundred of lines.
Walter Roberson
Walter Roberson 2014-1-3
filetext = fileread('Filename goes here');
dict_str = regexp(filetext, '(?:DICT).*', 'match');

此问题已关闭。

标签

Community Treasure Hunt

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

Start Hunting!

Translated by