Issue defending a variable in MATLAB APP Desinger
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Abdelrhman Abdelfatah
le 11 Déc 2022
Commenté : Walter Roberson
le 11 Déc 2022
I have a button taking a value from the user
% Value changed function: Freq_input2
function Freq_input2ValueChanged(app, event)
fm = app.Freq_input2.Value
app.Freqout.Value=fm;
end
and I defined fm in the main Properties as
properties (Access = private)
fm
amp
L
tread
p
end
Then I wanted to design a calculate (Push button) to perform certain analayiss,and I wanted to use this fm to calculate time vector
function Calculate_toggleButtonPushed(app, event)
fs=20*(app.fm)
N=10; % ?? For usage later on
t=-1:1/fs:1
m_k=app.amp*cos(2*pi*app.fm*t);
...
...
end
i get this error message
Error using /
Matrix dimensions must agree.
Error in NewGui/Calculate_toggleButtonPushed (line 118)
t=-1:1/fs:1
Error while evaluating Button PrivateButtonPushedFcn.
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Réponse acceptée
Torsten
le 11 Déc 2022
Modifié(e) : Torsten
le 11 Déc 2022
If fs is a vector of values, you have to use elementwise division:
1./fs
instead of
1/fs
Same for
m_k = app.amp.*cos(2*pi*app.fm.*t);
instead of
m_k=app.amp*cos(2*pi*app.fm*t);
4 commentaires
Walter Roberson
le 11 Déc 2022
You are assigning to local variable fm in the function, not to app.fm. The function does save the value but into a different location, not app.fm
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