How to print same input file name as the output file name
11 次查看(过去 30 天)
显示 更早的评论
Hi,
I am working on analyzing text files. I used fopen to open the txt file as following:
fid = fopen('output file name','w');
table = [t1(:),t2(:),t3(:)];
formatSpec ='%s,%1.1f,%1.1f,%1.1f\n';
for i= 1:length(x)
fprintf(fid,formatSpec,s{i,:}',table(i,:));
end
fclose(fid);
The code above is part of my code, which is the part that I use to print the output. The result of this code will print the output file name in my current folder.
How can I make the output text file name the same name as the input file name? Instead of typing the text file manually and sometimes I forget to change the output file's name.
0 个评论
采纳的回答
Adam Danz
2021-1-17
编辑:Adam Danz
2021-1-17
How are you getting the input file name in the first place? If it's stored as a variable, use that variable to name the output file.
fname = 'output file name';
fid = fopen(fname,'w');
or with file extension
fname = 'output file name';
fid = fopen([fname,'.txt'],'w');
2 个评论
Image Analyst
2021-1-18
You need to put it in a different folder or else you'll overwrite your input file with your output file since it has the same name! If you didn't do this, then your input file is now toast. It will have whatever you wrote to your output file.
更多回答(1 个)
Image Analyst
2021-1-18
Try this:
[inputFolder, inputBaseFileNameNoExt, ext] = fileparts(fullInputFileName);
outputFolder = fullfile(inputFolder, '/Output files'); % Wherever you want.
if ~isfolder(outputFolder)
% Folder does not exist so create it.
mkdir(outputFolder);
end
% Output file uses the same name as the input file, it's just in a different folder.
fullOutputFileName = fullfile(outputFolder, [inputBaseFileNameNoExt, ext]);
fid = fopen(fullOutputFileName, 'wt'); % Use wt to open for writing in text mode.
% Code below is the same as yours. I hope it works.
table = [t1(:),t2(:),t3(:)];
formatSpec ='%s,%1.1f,%1.1f,%1.1f\n';
for i= 1:length(x)
fprintf(fid, formatSpec,s{i,:}',table(i,:));
end
fclose(fid);
4 个评论
Image Analyst
2021-1-18
You must specify a folder that you can write to. Evidently you specified a system folder that you cannot write to. You MUST use a different folder for the output file since you said that it was going to have the same name as the input folder and if you don't, then your output file will blast on top of your input file and destroy it.
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Data Import and Export 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!