Change uiAxes DateNum to DateTime in AppDesigner for animatedLine Plot

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Umair Mughal 2020-6-3

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https://ww2.mathworks.cn/matlabcentral/answers/541319-change-uiaxes-datenum-to-datetime-in-appdesigner-for-animatedline-plot

编辑： Cris LaPierre 2020-6-3

Here, I have a UIAxes; with datenum tick marks. I have the values of x-ticks in String, as you can see from Time Field. I used datetickzoom and dynamicdateticks; but the zoom function gave error. Is there any possibility of changing these dateNum x-ticks to datetime ticks. It'll be better to use dynamic, but if there's no way for that, static vector ticks will also work.

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Answer 1

Cris LaPierre 2020-6-3

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https://ww2.mathworks.cn/matlabcentral/answers/541319-change-uiaxes-datenum-to-datetime-in-appdesigner-for-animatedline-plot#answer_445592

Can you convert your X data to datetime before plotting? Plots support datetimes as x values. You can convert a string to datetime using the datetime('06-Jun-2020 02:26:26') syntax.

You can use xtickformat function to format the datetime appearance.

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Umair Mughal 2020-6-3

编辑：Umair Mughal 2020-6-3

See everything works perfectly after using plot... As I zoom; it even shows the time in seconds.

Cris LaPierre 2020-6-3

编辑：Cris LaPierre 2020-6-3

在 MATLAB Online 中打开

If the appearance and labels are important, which I imagine they are, I would be inclined to suggest using plot instead of animatedline. Since I don't have your code, here's a simple example.

Somewhere, initialze the plot

l = plot(app.UIAxes,x(1),y(1,1))

Then, when you want to add points, update the XData and YData properties of your line object l.

l.XData = x(1:k);
l.YData = y(1:k,1);

And when you want to clear the points, you could do this.

l.XData = [];
l.YData = [];

I don't have your code, so you may need to do some slight modification to get this to work. If you are in app designer, you might also need to add l to your app properties, and reference it using app.l.

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