how to create a folder in GUI

I'm still new with GUI. I want to create a folder In GUI, each time I push a button. I will also set some images in this folder.

I will actually call a funktion that crop some images. The problem is, when I create a new folder in GUI by pushing a button, the folder is empty and the function therefore does nothing.

I make a funktion for create a folder as below:

function handles = directory( handles )

direct = uigetdir(pwd, 'Select Directory');

handles.myData.direct = direct;

end

a funktion that crop images is:

function handles = Cropbillede( handles )

folder_name = uigetdir;

ImagesToRead = dir(fullfile(folder_name, '*tif'));

ImageCell=cell(length(ImagesToRead),1);

CroppedImageCell=cell(length(ImagesToRead),1);

for k = 1 : length(ImagesToRead)

    ImageCell{k} = imread(ImagesToRead(k).name); 

    % Read image and store in cell array.

    CroppedImageCell{k} = imcrop(ImageCell{k},[0 0 1045 791]);

    % See comments below

end

SequenceName = 'CroppedBone' ;

for k = 1:length(ImagesToRead)

    ExportedName = sprintf('%s%03d.tif',SequenceName,k); 

    % Add the frame # after the name

    imwrite(CroppedImageCell{k}...

    ,ExportedName,...
    'tif','WriteMode','overwrite','Compression','none');

end

for k = 1:length(ImagesToRead)

    imwrite(CroppedImageCell{k},handles.myData.direct,SequenceName,...

        'tif','WriteMode','append','Compression','none'); 

        % Note the "append" writing mode.
end

end

and in my GUI:

function textfield_Callback(hObject, eventdata, handles)

 handles  = directory( handles );

 guidata(hObject,handles);

 handles = Cropbillede( handles );

 guidata(hObject,handles);

Anyone knows what is the problem in this code? and how to put images in this folder?

thanks in advance.

Answer 1

[Geoff Hayes]

Mehdi - you need to describe the steps that the user would follow when using your GUI. Does he/she

• select some files for cropping
• crop the images
• press a button to save the cropped images
• select a (new) folder to those cropped images

Or does the above occur in some other order? You have supplied a callback for a textfield, which seems to have the code for creating a directory, and then crops the images. It is unclear though why or how this textfield is to be used - why should its callback (and not a button?) be used to create the directory and crop the images? As well, are the directory and Cropbillede functions in separate m files, or declared within the GUI?

From your directory function, you do the following

 function handles = directory( handles )
   direct = uigetdir(pwd, 'Select Directory');
   handles.myData.direct = direct;
 end

So the user selects a directory (new or existing) and the value gets saved to the handles.myData.direct field. The updated handles gets returned and in the textfield callback the structure is saved using guidata. Then Croppbillede is called and has two blocks of code where data is written

 SequenceName = 'CroppedBone' ;
 for k = 1:length(ImagesToRead)
    ExportedName = sprintf('%s%03d.tif',SequenceName,k); 
    % Add the frame # after the name
    imwrite(CroppedImageCell{k}...
    ,ExportedName,...
    'tif','WriteMode','overwrite','Compression','none');
 end

 for k = 1:length(ImagesToRead)
    imwrite(CroppedImageCell{k},handles.myData.direct,SequenceName,...
        'tif','WriteMode','append','Compression','none'); 
        % Note the "append" writing mode.
 end

The first block seems to be writing a number of images to file, all whose name is something like CroppedBoneXYZ.tig where XYZ is a three digit number. But you don't specify the directory/folder for these files. Should the folder be that which was selected from the directory function? If so, then replace your ExportedName initialization with

 ExportedName = fullfile(handles.myData.direct,sprintf('%s%03d.tif',SequenceName,k));

which will add the directory to ExportedName and so the files should be saved there.

In your second for loop, you don't specify a file per se, but seem to expect that the same image (?) will be appended to the existing file since you are providing the directory to save the file and the SequenceName which is just CroppedBone. I suspect that this block would cause an error to be thrown - are you not observing this?

I suggest that you comment out the second for loop and check to make sure that the first for loop (once updated with the directory/folder to save the files) is working correctly, and then decide whether you need this extra code or not.

[mehdi]

It works now to create crop images by GUI.

The problem is now that the croped images are in same current folder as the uncroped images (orginale images) are. I actually wanted to set croped images in a seperat folder.

because I have another push button to plot the croped images, but when the uncroped and croped images are in the same folder, it's not allowed.

I dont know how to set the croped images in a seperat folder, because when making croped images, it's necessary to have them in same folder. Or I'm wrong!

I can manually set the croped image in another folder, but I want the program do it! is it possible?

[mehdi]

My GUI works like this:

By pushing a button, a folder appeares. By select the folder where images are, the images will be made into croped images in same folder.

[Geoff Hayes]

Why are you using a textfield with a callback? Or is your pushbutton named/tagged as textfield?

Have you modified the code with the suggestions that I made above?

[mehdi]

yes it's my name on pushbutton. and yes I have modified the code as you said.

[Geoff Hayes]

By pushing a button, a folder appeares. By select the folder where images are, the images will be made into croped images in same folder.

Yes, that is correct. If your cropped files are being written to the same directory as the uncropped images, then this is because you have selected to read the files from the same directory as want to write them to.