MATLAB app designer too many output arguments

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Chun Fai Leung
Chun Fai Leung 2022-7-27
评论： Chun Fai Leung 2022-7-28
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
Dennis 2022-7-28
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
Chun Fai Leung 2022-7-28
Thank Sir dpb for the help as well, problem solved. I input the incorrect name of edit field, how dumb I am. Sorry.

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采纳的回答

Dennis
Dennis 2022-7-28
There are 2 errors in this line:
app.DiffusionCoefficientmm2sEditFieldValueChanged.Value = app.DifCoeNum
First you got the name of your edit field and its callback mixed up.
Second your edit field is not numeric, so you need to convert app.DifCoeNum to a string.
This should work:
app.DiffusionCoefficientmm2sEditField.Value =num2str(app.DifCoeNum);
  1 个评论
Chun Fai Leung
Chun Fai Leung 2022-7-28
Oh Sir. Thank you so much. I did try using num2str before but it still pop up the "too many output arguments".
However, the main problem is that I input the incorrect edit field name. After I changed it back to the correct name of edit field, it works perfect.

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