mixing string name and number,is my commmand correct??
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Hi All
Since I just dont remember and dont know how to search for this question
would like to know
for naming the file as :
for i=1:100
delete('filename'+num2str(i))
end
is it correct ?
采纳的回答
Image Analyst
2014-10-17
I'd recommend you follow the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F because your method is not very robust. I prefer sprintf(). If you're not going to use, or can't use, dir() to get a listing of what files are there, then at least you should use exist() so you don't throw an exception that aborts your loop when the file is not found. That is what people do when they write robust code.
for k = 1 : 100 % Use k, not i (the imaginary variable)
baseFileName = sprintf('filename%d', k);
% Prepend the folder where the files live.
% If it's the current folder, then you can use folder = pwd.
fullFileName = fullfile(folder, baseFileName);
if exist(fullFileName, 'file')
% If the file exists, delete it.
delete(fullFileName);
end
end
but again, see the FAQ for better code examples than that.
4 个评论
farzad
2014-10-17
farzad
2014-10-17
farzad
2014-10-17
Adam
2014-10-17
If you put the extension on the baseFileName it will the get included correctly in the fullFileName.
%d is a placeholder for an integer which gets replaced by the value of k each time round the loop (look at formatSpec in the help for sprintf for other options here if you are interested in general, but %d is the correct one for this case)
更多回答（2 个）
Claude Porlier
2014-10-17
Try using this !
for i=1:100
delete(strcat('filename',num2str(i)))
end
Cheers !
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