Allowing for code to work different with file names
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I have a code that works fine but i have thus far only used it with a single test file. As a result of this i could run it while specifying the filename as well as the folder inside the code itself:
f1d = fopen(fullfile(sbd,'TEST_A.asc'),'rt');
Now that i need to apply it to multiple different files the code will not work. I have tried including a colon to read all files (as there is only one) but this doesn't work as the matlab error says there is no file name given. Can I not just specify the folder from which to select the file and the code read whatever files are in the folder?
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Image Analyst
2017-5-25
Aaron, if you just want the user to pick some file instead of using dir() or sprintf() to build/get the filename, do this:
% Have user browse for a file, from a specified "starting folder."
% For convenience in browsing, set a starting folder from which to browse.
startingFolder = 'C:\Program Files\MATLAB'; % Whatever you want.....
if ~exist(startingFolder, 'dir')
% If that folder doesn't exist, just start in the current folder.
startingFolder = pwd;
end
% Get the name of the file that the user wants to use.
defaultFileName = fullfile(startingFolder, '*.*');
[baseFileName, folder] = uigetfile(defaultFileName, 'Select a file');
if baseFileName == 0
% User clicked the Cancel button.
return;
end
fullFileName = fullfile(folder, baseFileName)
10 个评论
Jan
2017-5-26
This line removed the entries '.' and '..' from the output of the dir() command. In your case they will not appear, because aou are searching for '*.asc'. But if you re-use the code snippets in other programs, this might be useful:
FileList = dir(fullfile(cd, '*.'));
fprintf('%s\n', FileList.name)
Then you see the '.' and '..', which are current folder and parent folder.
There is no general meaning of "status, msg". For the fopen and mkdir command, the first output is a flag to reply the success status and msg contains an error message in case of problem, such that the user do not have to guess, what the problem is. See:
doc fopen
doc mkdir
更多回答(1 个)
Stephen23
2017-5-25
编辑:Stephen23
2017-5-25
How to read multiple files is explained extensively in the documentation, on this forum, and in the wiki:
etc
The first thing to decide is if you want to generate the file names, or if you want to read the names of existing files:
- generate names: use sprintf and fullfile.
- read names: use dir and fullfile.
You can find some examples with my FEX submission natsortfiles:
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