App timer slows when mousing over plot

Question

Jane Sprigg 2022-9-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1814705-app-timer-slows-when-mousing-over-plot

评论： Jane Sprigg 2022-9-30

The timer I'm using to update a plot slows down or stalls when I mouse over a plot (not necessarily one it's updating). Basically as long as I move my mouse I can stall the timer, so I get delays of 3s+ easily. The timer is supposed to run every 30ms (it isn't, but that's probably a different problem).

I've disabled Toolbars, HitTest, Pickable Parts. I'm using set to update the plot. Do I need to disable something else?

This is what the plot axes properties shows:

    AlignVertexCenters: off
            Annotation: [1×1 matlab.graphics.eventdata.Annotation]
          BeingDeleted: off
            BusyAction: 'cancel'
         ButtonDownFcn: ''
              Children: [0×0 GraphicsPlaceholder]
              Clipping: on
                 Color: [0 0.4470 0.7410]
             ColorMode: 'auto'
           ContextMenu: [0×0 GraphicsPlaceholder]
             CreateFcn: ''
       DataTipTemplate: [1×1 matlab.graphics.datatip.DataTipTemplate]
             DeleteFcn: ''
           DisplayName: ''
      HandleVisibility: 'on'
               HitTest: off
         Interruptible: on
              LineJoin: 'round'
             LineStyle: '-'
         LineStyleMode: 'auto'
             LineWidth: 0.5000
                Marker: 'none'
       MarkerEdgeColor: 'auto'
       MarkerFaceColor: 'none'
         MarkerIndices: [1 2]
            MarkerMode: 'auto'
            MarkerSize: 6
                Parent: [1×1 UIAxes]
         PickableParts: 'none'
              Selected: off
    SelectionHighlight: on
           SeriesIndex: 1
           SourceTable: [0×0 table]
                   Tag: ''
                  Type: 'line'
              UserData: []
               Visible: on
                 XData: [1 2]
             XDataMode: 'auto'
           XDataSource: ''
             XVariable: ''
                 YData: [0 0]
             YDataMode: 'manual'
           YDataSource: ''
             YVariable: ''
                 ZData: [1×0 double]
             ZDataMode: 'auto'
           ZDataSource: ''
             ZVariable: ''

This is what InstantPeriod shows for the timer. Right side is me moving the mouse.

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Answer 1

Eric Delgado 2022-9-30

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1814705-app-timer-slows-when-mousing-over-plot#answer_1063725

编辑：Eric Delgado 2022-9-30

在 MATLAB Online 中打开

app1.mlapp

uifigure is not the best idea if you are looking for performance... see other posts about it and maybe you gonna use the old figure. :)

Anyway... you going to have a significant improvement in performance by turning off the "DefaultInteractivity" (it's all fault of DataTip Interaction!), "XLimMode" and "YLimMode" properties and update only "YData". See attached app made on R2021b.

And you still will have the axes toolbar for interaction, but if you disable it, it's gonna be even better!

disableDefaultInteractivity(app.UIAxes)

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Jane Sprigg 2022-9-30

在 MATLAB Online 中打开

I'm running 2022a.2021b kept crashing on me. I didn't notice any pauses in your app.

Mine is updating with a timer and I've noticed that a mouse existing on the app (not interacting, just being on top of the app) will sometimes pause the timer for apparently no reason. I think that's a different problem though because this pause is specifically happening when I mouse over the plot (I think the data line on the plot).

This is how I initialize the plot in startup function:

            app.Receive1Plot.Toolbar.Visible='Off';
            disableDefaultInteractivity(app.Receive1Plot)
            app.ImHandles.R1=plot([0,0],'Parent',app.Receive1Plot);
            app.ImHandles.R1.BusyAction='cancel';
            app.ImHandles.R1.Interruptible='on';
            app.ImHandles.R1.HitTest='off';
            app.ImHandles.R1.PickableParts="none";

and then the plot is updated in a script called by a timer with:

set(app.ImHandles.R1,'XData',1:xSize,'YData',ydata)

I tried setting the limits to manual but it didn't stop the pause I'm seeing, and was running a tiny bit slower, I guess because I was setting the limits every time I updated the plot. I don't know what the limits are so I can't set them to constant values.

I also tried setting HitTest and PickableParts to off every time in the set command, but that didn't seem to have any effect either.

Eric Delgado 2022-9-30

在 MATLAB Online 中打开

You should use "hold" to keep DefaultInteractivity disable. Try this:

disableDefaultInteractivity(app.Receive1Plot)
hold(app.Receive1Plot, 'on')

Jane Sprigg 2022-9-30

Oh that's ridiculous. That did work, thanks!

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