matlab txt 文件操作

fid = fopen('result.txt', 'a') ;

fprintf( fid, '%-d\n', variable) ;

fclose( fid ) ;

%%%% matlab 打开文件后，逐行读取文件

fid = fopen('result.txt', 'r') ;

id = 1 ;

while 1

tline=fgetl(fid); % read the context of a line

if ~ischar(tline),break;end

tmp = [] ;

for i =1:11 % the first 11 is the lable of the data， 将前11个字符做成字符串

tmp = [ tmp tline(i) ] ;

end

%%%% tmp is a string, can be transformed into numbers.

id_list{ id } = tmp ;

id = id + 1 ;

end

fclose( fid ) ;

%%%%matlab整个读取.txt文件，比如：整幅图像

A = load('G:\zz_myfile.txt') ; % 直接load文件， 或使用fscanf读

%%%% matlab 逐行书写到文件

fid = fopen('result.txt', 'a') ;

for i = 1:length( id_list )

tmp = [] ;

tmp = ‘hello,world!’ ;

fprintf( fid, '%s\n', tmp ) ; % write line by line

end

fclose( fid ) ;