How to show the contents of a folder in app designer and plot the files in it ?

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farzad 2020-3-26

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https://ww2.mathworks.cn/matlabcentral/answers/513051-how-to-show-the-contents-of-a-folder-in-app-designer-and-plot-the-files-in-it

评论： farzad 2020-4-6

Hi All

my code generates some excel files as output in a certain folder. which are a 2 column data. I was wondering if there is any way to show the content of this folder in a box as a list that dynamically updates as the code proceeds, or even just using a button that can update this box. then by hovering over each file name and selecting it from the box, I could plot it in a UIfigure plot in the app window. is this possible ?

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采纳的回答

Ameer Hamza 2020-3-26

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https://ww2.mathworks.cn/matlabcentral/answers/513051-how-to-show-the-contents-of-a-folder-in-app-designer-and-plot-the-files-in-it#answer_422083

sample.mlapp

See the attached app. It will list all the .xlsx file in the current folder and if it only has two columns, then plot it on the axes.

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farzad 2020-3-26

在 MATLAB Online 中打开

thank you so much !! it works perfectly ! just that I was trying to include the hold on button in my case, so that when I move from one file to the other one, if I have checked the hold on check button, it holds the previous figure

I did the follwing but it did not work

        % Value changed function: HoldPlotsCheckBox
        function HoldPlotsCheckBoxValueChanged(app, event)
            value = app.HoldPlotsCheckBox.Value;
            
        end
        % Value changed function: FilesListBox
        function FilesListBoxValueChanged(app, event)
           switch app.HoldPlotsCheckBox.Value
               case 0
                  app.selectplot= uigetfile();
                  drawnow;
    %             FocusUIFigure(app.UIFigure)
                  app.UIFigure.Visible = 'off';
                  app.UIFigure.Visible = 'on';
                  filename = app.FilesListBox.Value;
                  data = xlsread(filename);
                  plot(app.UIAxes, data(:,1), data(:,2));
               
               case 1
                   app.selectplot= uigetfile();
                   drawnow;
%                    FocusUIFigure(app.UIFigure)
                   app.UIFigure.Visible = 'off';
                   app.UIFigure.Visible = 'on';
                   filename = app.FilesListBox.Value;
                   data = xlsread(filename);
                   plot(app.UIAxes, data(:,1), data(:,2));
                   hold on
                   
                  
           end
            
        end