Info

La pregunta está cerrada. Vuélvala a abrir para editarla o responderla.

Obtain output from a text file

1 visualización (últimos 30 días)
Derick Wong
Derick Wong el 3 de En. de 2014
Cerrada: MATLAB Answer Bot el 20 de Ag. de 2021
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.

Respuestas (1)

Walter Roberson
Walter Roberson el 3 de En. de 2014
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 comentarios
Derick Wong
Derick Wong el 3 de En. de 2014
Editada: Derick Wong el 3 de En. de 2014
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 el 3 de En. de 2014
filetext = fileread('Filename goes here');
dict_str = regexp(filetext, '(?:DICT).*', 'match');

La pregunta está cerrada.

Etiquetas

Community Treasure Hunt

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

Start Hunting!

Translated by