Checkboxes values don't change after checking them off in UItable in app designer

Question

Connor 2024-3-12

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2093641-checkboxes-values-don-t-change-after-checking-them-off-in-uitable-in-app-designer

编辑： Connor 2024-3-14

I am struggling to understand why my logical variables are not changing in value after selecting them in the UItable.

I have included a picture of my checkboxes and variables in my base workspace in matlab that would correlate to the first column shown in the image.

The following function is how the values change in my code. To update it after channels have been selected I using the following;

function UpdateUITable(app, subsystem)
    % Initialize visibility and calibration logical arrays
    app.IndvCal = false(size(subsystem.ChannelNames));
    app.ofchan = false(size(subsystem.ChannelNames));
    % list all the channel names
    app.Channels = string(subsystem.ChannelNames);
        
    % Create a cell array with channel names, on/off switch for the channel and the calibration, 
    UIData = [app.Channels, app.ofchan, app.IndvCal];
    
    % Update the UITable data
    app.UITable.Data = UIData;
       end

and to update which channels are suppose to be being shown and/or calibrated is;

    function UITableCellEdit(app, event)
       for i = 1:8
             if app.ofchan(i,1) == true
               app.SelectedChannels(i,1) = i;
             end
        % if the third column is being checked for everyrow if the value
        % is true list which row/column it is in
              if app.IndvCal(i,1) == true
                    app.SelectedCal(i,1) = i;
              end 
    end
    assignin("base","ofchan",app.ofchan)
    assignin("base","IndvCal",app.IndvCal)
    assignin("base","SelectedChannels",app.SelectedChannels)
    assignin("base","SelectedCal",app.SelectedCal)
 
    % Call the function that uses the selected channels (e.g., data calibration)
    updateChannelMeasurementComponents(app)
   end

All the values of the assignin variables are 0 but I am unsure why. I checked the logic on the for loop in a livescript and it should work. I think I might need to change the length of the following properties (app.SelectedChannels && app.SelectedCal), but, I do not know how to go about it and only keep the values that would be stored into them using the for loop.

I know that I am missing something here but I am having a hard time trying to figure out what the issue is. Any and all help is appreciated.

Thanks

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Answer 1

Kevin Holly 2024-3-13

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2093641-checkboxes-values-don-t-change-after-checking-them-off-in-uitable-in-app-designer#answer_1424756

编辑：Kevin Holly 2024-3-13

在 MATLAB Online 中打开

Below the logical array, app.ofchan, is defined as all false (0) .

app.ofchan = false(size(subsystem.ChannelNames));

If you want to change the value of app.ofchan after you interact with app.UITable. You can add the following line.

app.ofchan = app.UITable.Data(:,2)

When you interact with app.UITable, you change app.UITable.Data and not app.ofchan. The above line would update the value of app.ofchan.

You may want to consider using app.UITable in place of app.IndvCal, app.ofchan, and app.Channels, unless these variable will be used elsewhere and are distinctly different from the columns in the app.UITable.

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Connor 2024-3-13

编辑：Connor 2024-3-13

在 MATLAB Online 中打开

I am now getting the error on the first line of code in the second code block listed.

Error using LiveDataAcquisition_MultiChannel_Saving/UITableCellEdit
Error setting property 'ofchan' of class 'LiveDataAcquisition_MultiChannel_Saving'. Value must be of type logical
or be convertible to logical. 

I dont use them anywhere else I only use the app.SelectedCal & the app.SelectedChannels

I also have changed the function to;

    app.ofchan = app.UITable.Data(:,2);
    app.IndvCal = app.UITable.Data(:,3);
   % Update SelectedChannels based on ofchan
   app.SelectedChannels = find(app.ofchan);
   % Update SelectedCal based on IndvCal
   app.SelectedCal = find(app.IndvCal);
   %
   disp(app.IndvCal)
   disp(app.ofchan)
   % Call the function that uses the selected channels (e.g., data calibration)
   updateChannelMeasurementComponents(app)

Do you know why I might be getting this error? I have defined the variable as a logical and it is reading out as a logical and has false(0) values already in it.

I also also defined them as private properties for the purpose of the initialization of the UITable and the celledit callback needing to be in seperate functions. Does that make sense?

Thanks

Connor 2024-3-14

After using the break point at the end of the function, I can confirm that it is a string array.

Connor 2024-3-14

编辑：Connor 2024-3-14

I ended up fixing it by chaning the data into a table and then using table2array when outputting the values. Now am having problems relating to plotting the channels that I have selected and calibrating them.

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