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);