Issue defending a variable in MATLAB APP Desinger

1 次查看（过去 30 天）
Abdelrhman Abdelfatah
评论： Walter Roberson 2022-12-11
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.

请先登录，再回答此问题。

采纳的回答

Torsten
Torsten 2022-12-11
编辑：Torsten 2022-12-11
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 个评论
显示 2更早的评论
Abdelrhman Abdelfatah
Abdelrhman Abdelfatah 2022-12-11
then how can I call the value of fm?
I thought I would just use app.fm no? because it's decalred inside another function
Walter Roberson
Walter Roberson 2022-12-11
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

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Environment and Settings 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by