Rename images using uigetfile and cell array
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Marcel Liphardt
il 14 Ago 2017
Commentato: Image Analyst
il 15 Ago 2017
Greetings,
so Im using the following function to rename my images that I would like to open via the uigetfile and then try to rename them with the movefile method. This code only works when the images are in the matlab path.
function output(~)
dirData = dir('*.jpg');
fileNames = {dirData.name};
for iFile = 1:numel(fileNames)
newName = sprintf('left%03d.jpg',iFile);
movefile(fileNames{iFile},newName);
end
But now if I try to input this:
dirData = uigetfile({'*.jpg'},'MultiSelect', 'on', 'Please selecet the images');
instead of:
dirData = dir('*.jpg');
then it just gives me the error message: Struct contents reference from a non-struct array object. Error in output (line 4) fileNames = {dirData.name};
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Risposta accettata
Adam
il 15 Ago 2017
Use the two output form of uigetfile:
[filenames, pathname] = uigetfile({'*.jpg'}, 'MultiSelect', 'on', 'Please select the images');
fullFilenames = cellfun( @(x) fullfile( pathname, x ), filenames, 'UniformOutput', false );
and then it should work as you have the full path instead of just a filename that must be on the Matlab path.
4 Commenti
Adam
il 15 Ago 2017
You need to use fullfile with a directory path for your destination file too in movefile. Don't just give it a filename. By default it will just save it in the current working directory which is presumably not what you want.
doc fullfile
should help. If you are creating each new filename in a loop as you appear to be then you won't need cellfun to do these as you did for the source files.
Più risposte (1)
Image Analyst
il 14 Ago 2017
Modificato: Image Analyst
il 15 Ago 2017
Try this:
folder = pwd; % Or use getdir().
filePattern = fullfile(folder, '*.jpg'); % Don't use JPG images for image analysis.
dirData = dir(filePattern);
for k = 1 : length(dirData)
thisFileName = fullfile(folder, dirData(k).name);
newName = sprintf('left%03d.jpg',k);
newFileName = fullfile(folder, newName);
fprintf('Renaming %s to %s\n', dirData(k).name, newName);
movefile(thisFileName, newName);
end
2 Commenti
Image Analyst
il 15 Ago 2017
You can use this code if you want the user to specify the files:
folder = pwd; % Starting folder.
filePattern = fullfile(folder, '*.jpg'); % Don't use JPG images for image analysis.
[filenames, folder] = uigetfile(filePattern, 'MultiSelect', 'on', 'Please select the images');
for k = 1 : length(filenames)
thisFileName = fullfile(folder, filenames{k});
newName = sprintf('left%03d.jpg',k);
newFileName = fullfile(folder, newName);
fprintf('Renaming %s to %s\n', filenames{k}, newName);
movefile(thisFileName, newFileName);
end
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