Clearing a Panel - AppDesigner

Question

Garrett Valley 2021-7-12

0
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https://ww2.mathworks.cn/matlabcentral/answers/876583-clearing-a-panel-appdesigner

回答： Jonathan Wharrier 2024-1-26

Hi, I am creating an App that utilizes the add-on myaxisc, which creates figures with many y axis in a panel object. I am looking for a way to completely clear the panel, as I am replotting many times based on user input. Would really appreciate any help

Thanks,

Garrett

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Jordan 2023-8-9

Can you share the code for using myaxisc in app designer? I just found this add-on and want to understand it a bit better.

Thanks!

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Answer 1

Tanay Gupta 2021-7-13

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https://ww2.mathworks.cn/matlabcentral/answers/876583-clearing-a-panel-appdesigner#answer_745753

在 MATLAB Online 中打开

In App Designer, objects share data with each other through properties. You can share these properties between various objects. Every time the user gives an input an event is generated. You can code how the graph changes when this happens by editing the callback section of that object (e.g. slider, input box, etc). Using these two tools you can change the output in any way you like. Please refer the documentation for more information.

For e.g. if you want to clear the plotted data when a button is pressed you can save the data as a property (e.g. as plotted_Data) while plotting and run the following commands.

Assuming you have a button. The layout will be something like this:

function ButtonPushed(app, event)
    delete(plotted_Data)
end

Using the above command you can clear the plotted the data from the graph in the panel.

If you want to resize the axis then you can change the property of the UIAxes as follows:

%The range can be dynamic based on the input
function ButtonPushed(app, event)
    app.UIAxes.XTick = [0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2];
end

To delete the axis you can use the command below:

function ButtonPushed(app, event)
    delete(app.UIAxes);
end

You can recreate the axis like this

function ButtonPushed(app, event)
    app.UIAxes = uiaxes(app.Panel);
    title(app.UIAxes, 'Title')
    xlabel(app.UIAxes, 'X')
    ylabel(app.UIAxes, 'Y')
    zlabel(app.UIAxes, 'Z')
    app.UIAxes.XTick = [0 0.2 0.4 0.6 0.8 1];
    app.UIAxes.XTickLabel = {'0'; '0.2'; '0.4'; '0.6'; '0.8'; '1'};
    app.UIAxes.Position = [78 67 259 185];
end