MATLAB app designer too many output arguments

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Chun Fai Leung 2022-7-27

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https://ww2.mathworks.cn/matlabcentral/answers/1769285-matlab-app-designer-too-many-output-arguments

评论： Chun Fai Leung 2022-7-28

采纳的回答： Dennis

modifiedDataset.xlsx

在 MATLAB Online 中打开

I wrote an app for particle tracking. Data is stored in a Excel datasheet.

I would like to create a "calculate Diffusion Coefficient" button and the Row 1, Column 14 data will displayed on the diffusion Coefficient edit field. However, when I used the following code, it show the "too many output arguments" and I searched and still don't know how to solve it. Could anyone helped me solve this please. Appreciate it a lot.

% Button pushed function: CalculateDiffusioncoefficientButton
        function CalculateDiffusioncoefficientButtonPushed(app, event)
           dataset = xlsread('modifiedDataset.xlsx','Sheet1')
           app.DiffusionCoefficientmm2sEditFieldValueChanged.Value = dataset(1,14)

I even tried add a private property but it still doesn't work.

% Button pushed function: CalculateDiffusioncoefficientButton
        function CalculateDiffusioncoefficientButtonPushed(app, event)
            
           dataset = xlsread('modifiedDataset.xlsx','Sheet1')
           app.DifCoeNum = dataset(1,14)
           app.DiffusionCoefficientmm2sEditFieldValueChanged.Value = app.DifCoeNum

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Dennis 2022-7-28

在 MATLAB Online 中打开

value=app.DiffusionCoefficientmm2sEditField.Value;

That line is created by appdesigner automatically when you add a ValueChanged callback to an editfield. But you are correct that in this case the line does nothing and value is not getting used or stored.

Chun Fai Leung 2022-7-28