matlab将矩阵写入文件

%
%% date: 5/5/2017
%
%% Author: Congbo Ma, Hu Wang
%
%  write matrix to file
function wrt_mat_to_file( filename,source_matrix )  
fid=fopen(filename,'a');
[x,y]=size(source_matrix);  
for i=1:x
    for j=1:y-1
        fprintf(fid,'%f\t',source_matrix(i,j));
    end
    fprintf(fid,'%f\n',source_matrix(i,y));%每一行回车\n
end  
fclose(fid);
end