Dorp Down Menu in App Designer doesn't accept values

Question

Dennis Premoli 2022-4-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1702725-dorp-down-menu-in-app-designer-doesn-t-accept-values

评论： Cris LaPierre 2022-5-9

Hi everyone,

I'm trying to use a drop down menu in App Design to plot different channles from a .csv file. Essentially, it has a (time, fx,fy,fz) column structure. I have created the drop down menu button, and assigned Items and the corresponding values I want those items to have. However, I'm having trouble in the execution, as it seems that only one value is passed through properly, resulting in 2/3 graphs being completely broken. When I try to debug it by setting a different initial value, this is the error I get. I've researched it and there's not much info out there on how to fix it, especially since I'm seemengly doing a very simple thing. When I try to change the 'Value' from 2 to any other in the 'Items Data' list, I get the error.

The follwing is the UI component code generated by App Designer as well.

% Create AxisDropDownProcessing

app.AxisDropDownProcessing = uidropdown(app.PreprocessingTab);

app.AxisDropDownProcessing.Items = {'X', 'Y', 'Z'};

app.AxisDropDownProcessing.ItemsData = [2 3 4];

app.AxisDropDownProcessing.Editable = 'on';

app.AxisDropDownProcessing.ValueChangedFcn = createCallbackFcn(app, @AxisDropDownProcessingValueChanged, true);

app.AxisDropDownProcessing.BackgroundColor = [1 1 1];

app.AxisDropDownProcessing.Position = [67 648 50 22];

app.AxisDropDownProcessing.Value = 2;

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Answer 1

Cris LaPierre 2022-4-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1702725-dorp-down-menu-in-app-designer-doesn-t-accept-values#answer_948525

I see the same behavior. However, I could use the button with the vertical 3 dots to the right of the Value and Items fields to modify the default selection.