How to i reset/clear an figure in app designer?

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Happy PhD
Happy PhD 2020-4-29
回答： Hadi Mahmodi 2022-6-20
I tried to write
app.UIAxes.cla;
or
cla(app.UIAxes)
but it doesn't do the job.
Yes it clears the figure, but when I replot something, in the same figure, the old data is still there.
How can I remove this previous data/plots?
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Fabian Winkler
Fabian Winkler 2020-5-27
I have the same problem.
This is how I plot the data in the first button pushed function
hold(app.UIAxes);
plot(app.UIAxes, x_data, y_data)
After this I tried in another button pushed function
cla(app.UIAxes)
and
app.UIAxes.cla
both is not working.
I am using Matlab 2019b
Eric Sargent
Eric Sargent 2020-12-9
You also need to specify what kind of hold you want.
Your code is:
hold(app.UIAxes);
Which toggles hold between "on" and "off" and thus could very well be contributing your observed behavior.
You need to specify "on" or "off" as follows:
hold(app.UIAxes,"on");
or
hold(app.UIAxes,"off");

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采纳的回答

Fabian Winkler
Fabian Winkler 2020-5-27
Found the solution.
cla(app.UIAxes)
worked for me.
Befor I got an error: "Reference to a cleared variable app". This was because of a
clear all
. Without it, everything is fine.

更多回答（1 个）

Hadi Mahmodi
Hadi Mahmodi 2022-6-20
cla(app.UIAxes, 'reset')
this worked for me. Matlab 2020a

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