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I tried help fopen,
but there is no explanation what t means .
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fileID = fopen( filename ) opens the file, filename , for binary read access, and returns an integer file identifier equal to or greater than 3. MATLAB® reserves file identifiers 0 , 1 , and 2 for standard input, standard output (the screen), and standard error, respectively.
Use fopen to open the file, specify the character encoding, and obtain the fileID value. When you finish reading, close the file by calling fclose(fileID) . A = fscanf( fileID , formatSpec , sizeA ) reads file data into an array, A , with dimensions, sizeA , and positions the file pointer after the last value read.
Write Tabular Data to Text File txt . x = 0:. 1:1; A = [x; exp(x)]; fileID = fopen('exp. txt','w'); fprintf(fileID,'%6s %12s\n','x','exp(x)'); fprintf(fileID,'%6.2f %12.8f\n',A); fclose(fileID);
You can export a cell array from MATLAB® workspace into a text file in one of these ways: Use the writecell function to export the cell array to a text file. Use fprintf to export the cell array by specifying the format of the output data.
From the documentation (R2009a, Windows):
On UNIX systems, binary and text modes are the same.
On Windows systems, binary and text modes are different. If you are unsure which mode is best for your file, use binary mode. By default,
fopenopens files for binary read access.In binary mode, read and write operations process all characters in the same manner. In text mode:
Read operations that encounter a carriage return followed by a newline character remove the carriage return from the input.
Write operations insert a carriage return before any newline character in the input.
The UNIX version (R2009b) goes on to add (in doc fopen):
For better performance, do not use text mode.
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It's similar to PHP and other languages in that the t does stand for "text" mode; however, the meaning is a little different.
In MATLAB, if you open a file in text mode, it strips line endings from input before the lines are processed or manipulated, then readds them for output; binary mode, indicated with a b, performs no such newline stripping.
See the fopen reference.
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