"Error using save Must be a string scalar or character vector." - but it is a string!
593 次查看(过去 30 天)
显示 更早的评论
I'm getting the error when I run the following line:
save(['data/test',num2str(n),'.mat'],U,U_old,dt);
where n is my loop index. This is bizarre. For the record, when I stop at the breakpoint, typing this at the command line works:
save data/test1.mat U U_old dt
But I need to be able to change the filename within the loop, hence why I'm doing it the first way. When I type this at the command line:
['data/test',num2str(n),'.mat']
I get the expected 'data/test1.mat' result. The variable U is an 889x4 matrix, U_old is the same size, and dt is a single float. Even typing
save('data/test1.mat',U,U_old,dt);
at the command line when I stop gives me this error. What gives?
0 个评论
采纳的回答
更多回答(1 个)
Walter Roberson
2019-4-7
save( sprintf('data/test%d.mat', n), 'U', 'U_old', 'dt');
The quotes around the U and so on are the important part for your problem; the sprintf is just a cleaner way of creating the file name.
2 个评论
Shuting Li
2021-2-3
And where can I add filepath? I want to save file in other filepath? Thank you very much
Walter Roberson
2021-2-3
filename = fullfile(filepath, sprintf('test%d.mat', n));
save(filename, 'U', 'U_old', 'dt');
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Cell Arrays 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!