matlab————矩阵输出到txt

matlab如何输出矩阵到txt并指定数的精度 (2013-11-20 16:50:43)转载▼
标签： matlab 输出数据
假设你的数据矩阵为a;
[m n] = size(a);
[filename pathname] = uiputfile{'*.txt','Select Save file');
if ~filename
return;
else
str = [pathname filename];
fin = fopen(str,'wt');
for i = 1:m
for j =1:n
fprintf(fin,'.3f\t',a(i,j)); %指定输出格式和小数点后有效位数
end
fprintf(fin,'\n');
end
fclose(fin);
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MATLAB初学者必读
clear,clc
a = rand(12000,1004);
fid = fopen('2.txt','w');
fprintf(fid,['%f %f %f %f ' repmat('%f',1,1000) '\r\n'],a');
fclose(fid);