Printing specific lines to a text file

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Danny Coles
Danny Coles 2013-11-14
回答： Simon 2013-11-14
Hi,
I need to split a text file into 2, so that I can write the first half of teh text file to a new text file, then insert some code into teh new text file that I have generated from Matlab, then insert the remaining half of teh original text file to teh new text file.
I have imported a text file (called subroutines.txt) and displayed it in Matlab using the following code:
% Read subroutines into Matlab
fileID = fopen('subroutines.txt'); T = textscan(fileID,'%s','Delimiter',' '); fclose(fileID); celldisp(T);
type subroutines.txt
This appears in the Matlab workspace as a 28712 x 1 cell. In the original subroutines.txt text file, there are 2524 lines of text, and by using the type subroutines.txt the data is displayed in Matlab correctly.
I would like to know how I can print half of the subroutines.txt text file to a new text file (lets call it new.txt).
Any help on this would be greatly appreciated.
Cheers
Danny

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回答（1 个）

Simon
Simon 2013-11-14
Hi!
If you read line by line with textscan, you should use '\n' as delimiter.
fid = fopen(FileName, 'r');
FC = textscan(fid, '%s', 'Delimiter', '\n');
fclose(fid);
FC = FC{1};
This gives you a cell array with as many cells as you have lines. Youmay write tham to a file using fopen/fclose and fprintf.

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