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Displaying properties defined in MATLAB application

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Aditya Bhatt
Aditya Bhatt on 25 Jun 2020
Commented: Aditya Bhatt on 10 Jul 2020
How can properties defined in an application be displayed ? The properties have numerical values. I have tried using spinners and EditText Fields but there is an error in the data type.
Aditya Bhatt
Aditya Bhatt on 10 Jul 2020
Thanks Walter. I created two output fields and the issue is resolved.

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Answers (1)

Adam Danz
Adam Danz on 7 Jul 2020
I just opened app designer and tried to set the value of a spinner to 1.3139 + 0.0069i. I received the same error as you.
'Value' must be a double scalar.
This is a poorly written error because 1.3139 + 0.0069i is a double and is a scalar.
class(1.3139 + 0.0069i)
ans =
isscalar(1.3139 + 0.0069i)
ans =
But it makes sense that the spinner should be a real number.
The solution is to fix the problem with the value of app.B. My guess is that it should not be an imaginary number. Look into how app.B is being computed. If it should be an imaginary number, it's not clear to me how that would be represented in a spinner object.
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Aditya Bhatt
Aditya Bhatt on 10 Jul 2020
Thank you, Adam. I have managed to fix the problem. The value of the variable is still has an imaginary part which should not have been the case. But while assigning the value to the spinner I have used the commal 'real(app.B)' and that has solved the problem. I do intend to analyse the reason as to why the variable is taking up an imaginary value but I feel it will need some time.

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