How can I get the GUI to browse for a specific file?

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Sue 2011-7-4

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回答： Ka Mirul 2017-11-20

Hi. I am new to this Matlab GUI and would love your help.

I have an m-file that runs perfectly but wish to put in into a GUI (using GUIDE) to make it more user-friendly.

In my m-file, I manually insert the pathname for the directory in which the necessary jpeg images are to be found. How do I execute this in the GUI? How can I get the user to be able to select the path/file in which the GUI can extract and use the JPEGs within the selected file? I think I need some kind of "browse the user's computer directory" function but am not sure how to achieve this? And how do I then put this path into the m-file?

Any help and advice would be greatly appreciated.

Sue x

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Answer 1

Gerd 2011-7-4

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Hi Sue,

you can use uigetfile to open a dialog where the user can choose the file.

Gerd

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Sue 2011-7-4

Erm I have tried this but it only puts the string "set(handles.txt_directory,'String',directory);" into the text box - it doesn't actually change into the pathdirectory of the chosen file once the user makes their choice.

Gerd 2011-7-4

Sue can you sent me the .fig file and the .m file using the contact. I think we are talking about different stuff :-)

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Answer 2

Ka Mirul 2017-11-20

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I found a video that help me, it is about creating GUI to browse an image and display the image and its name. It should help you : https://youtu.be/7EmFShs5y9I

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Answer 3

Narciso Neves 2014-7-31

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Sue, there is a typo on directoy = uigetdir; Is missing an "r" in "directory" ... that's why it was failing. :D

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Answer 4

Jaime López 2017-3-8

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在 MATLAB Online 中打开

This is a simplistic version of what I usually add:

I use two handles for the path: InitialPath: the path where I execute the function, you need to get back there in order to keep on executing it. CurrentPath: the path where the user is currently searching.

I create a listbox object for the user to browse in, where I print the current directory list:

      function listbox_Ruta_Callback(hObject, eventdata, handles)
          option = hObject.Value;
          directories = hObject.String;
          cd(handles.CurrentPath);
          if strcmp(directories(option,1:2),'. ') || strcmp(directories(option,1:2),'..') % two first options are to go to the higher directory
              cd('..');
              handles.CurrentPath= pwd;
          else
              if isempty(strfind(directories(option,:),'.')) %If it is a folder, get inside it (maybe better with isdir() function, but I haven't tried)
                  cd(directories(option,:));
                  handles.CurrentPath= pwd;
                  hObject.Value = 1; % You have to reset the value to prevent some errors.
              else
                  %If it is a file, do wahtever you want with it, or pass the information with a handler to another function
                  handles.CurrentPath= pwd;
              end
          end
          hObject.String = ls;
          cd(handles.InitialPath);
      % Update modified information
      guidata(hObject, handles);