Tag: RolloverModifier

Hi !
Is it possible to display the RollOverModifier tooltip on the real points only ? Say I have points (1 1) and (3 3) in my chart and I don’t wan’t the tooltip to display (1.5 1.5), (2 2), (2.5 2.5) etc. when rolling over… Any idea ?

Thank you,

Adrien

In my implementation I have the xAxis using a DateAxis in the dataset I am using there is only one data point.

The RolloverModifier is very sensitive it is very hard to highlight that one point.

RolloverModifier rolloverModifier = new VitalChartRolloverModifier();
rolloverModifier.setSourceMode(SourceMode.AllVisibleSeries);
rolloverModifier.setDrawVerticalLine(true);
rolloverModifier.setShowTooltip(true);
rolloverModifier.setShowAxisLabels(false);
rolloverModifier.setIsEnabled(true);
rolloverModifier.setUseInterpolation(false);

Is there a way of making it less sensitive?

Hi,

I’m trying to update a chart from version 3.1.x of a chart. In the old chart there was a XyScatterRenderableSeries with markers width set to 8. The Rollover line had the same width as the marker and it was easy to hit a point. After update the rollover line is thin and it is hard to hit a point. Please advise if it is possible to get back the old behavior.

After migrating to 4.0.5, I have shadows on my tooltips as below.
Also, the herringbone pattern is new to 4.0.
I have:

  </Border>
</ControlTemplate>


<s:SciChartSurface.ChartModifier>
    <s:ModifierGroup>
      <s:RolloverModifier s:Name="rolloverModifier"
                                    LineOverlayStyle="{StaticResource RolloverLineStyle}"
                                    DrawVerticalLine="True"
                                    SourceMode="AllSeries"
                                    ShowTooltipOn="MouseLeftButtonDown"                                  
                                    ShowAxisLabels="True" />
      <s:SeriesSelectionModifier ReceiveHandledEvents="True" />
    </s:ModifierGroup>
  </s:SciChartSurface.ChartModifier>

Any hints on how to get rid of them?

Hello !

I have a chart displaying very accurate data and I would like the RolloverModifier to adopt the same format as my Y axis.
I want to avoid problems similar to the one on the screenshot attached. The tooltip is indicating -0 and I would like it to display something like -2.5E-6.

Thank you for your help,

Adrien

I’m getting the following crash:

2020-02-14 16:45:43.902812-0500 CommonStock Development[2425:710225] -[SCIRolloverModifier onTouchesCancelled:]: unrecognized selector sent to instance 0x282ffe080
2020-02-14 16:45:43.904098-0500 CommonStock Development[2425:710225] *** Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason: ‘-[SCIRolloverModifier onTouchesCancelled:]: unrecognized selector sent to instance 0x282ffe080’

whenever I try to scrub my chart, I must also note that in order for the legend to show, I have to tap really hard on the surface.

This is my code:

func set(data set: SimpleChartDataSet, alternate: SimpleChartDataSet) {

    let lineDataSeries = SCIXyDataSeries(xType: .double, yType: .double)
    let dashedDataSeries = SCIXyDataSeries(xType: .double, yType: .double)

    let group = DispatchGroup()
    group.enter()

    DispatchQueue.global(qos: .userInteractive).async {
        for (index, i) in set.enumerated() {
            lineDataSeries.append(x: Double(index), y: Double(i))
        }

        for (index, i) in alternate.enumerated() {
            dashedDataSeries.append(x: Double(index), y: Double(i))
        }

        group.leave()
    }

    group.notify(queue: .main) {

        let lineSeries = SCIFastMountainRenderableSeries()
        lineSeries.zeroLineY = set.min() ?? 0.0
        lineSeries.dataSeries = lineDataSeries
        lineSeries.strokeStyle = SCISolidPenStyle(color: UIColor.green, thickness: 2.0)
        lineSeries.areaStyle =  SCILinearGradientBrushStyle(start: CGPoint(x: 0, y: 1), end: CGPoint(x: 0, y: 0), start: UIColor.green, end: UIColor.clear)

        let dashedSeries = SCIFastLineRenderableSeries()
        dashedSeries.zeroLineY = set.min() ?? 0.0
        dashedSeries.dataSeries = dashedDataSeries
        dashedSeries.strokeStyle = SCISolidPenStyle(color: UIColor.white, thickness: 2.0, strokeDashArray: [2.0,2.0,2.0,2.0])

        SCIUpdateSuspender.usingWith(self.surface) {

            self.surface.xAxes.clear()
            self.surface.yAxes.clear()
            self.surface.renderableSeries.clear()

            let xAxis = SCINumericAxis()
            xAxis.drawLabels = false
            xAxis.drawMajorBands = false
            xAxis.drawMajorGridLines = false
            xAxis.drawMinorGridLines = false
            xAxis.drawMinorTicks = false
            xAxis.drawMajorTicks = false
            xAxis.drawLabels = false

            let yAxis = SCINumericAxis()
            yAxis.drawLabels = false
            yAxis.drawMajorBands = false
            yAxis.drawMajorGridLines = false
            yAxis.drawMinorGridLines = false
            yAxis.drawMinorTicks = false
            yAxis.drawMajorTicks = false
            yAxis.drawLabels = false

            self.surface.xAxes.add(items: xAxis)
            self.surface.yAxes.add(items: yAxis)
            self.surface.renderableSeries.add(items: lineSeries, dashedSeries )
            self.surface.chartModifiers.add(SCIRolloverModifier())
        }
    }
}

Hello SciChart Team,

I was facing a problem lately and would like to know if you can reproduce it or maybe if you have fixed it in the latest version already.

I have created a chart with a X axis using DateTime as format. When I use the RolloverModifier in combination with Interpolation I get an ArgumentOutOfRangeException when moving the cursor to the Y Axis (see attached image).

I have attached the full excetption details as well.

I am looking forward to your feedback.

Thanks and best regards
Stefan

SciChart Version: 5.4.0.12119
SciChart Runtime Version: v4.0.30319


System.ArgumentOutOfRangeException was unhandled Message: An unhandled
exception of type 'System.ArgumentOutOfRangeException' occurred in
WindowsBase.dll Additional information: Ticks must be between
DateTime.MinValue.Ticks and DateTime.MaxValue.Ticks.


System.ArgumentOutOfRangeException: Ticks must be between DateTime.MinValue.Ticks and DateTime.MaxValue.Ticks.
Parameter name: ticks
   at System.DateTime..ctor(Int64 ticks)
   at A.ARB.Subtract(DateTime a, DateTime b)
   at SciChart.Charting.Model.DataSeries.DataSeries2.FindClosestLine(IComparable x, IComparable y, Double xyScaleRatio, Double xRadius, LineDrawMode drawNanAs)
   at SciChart.Charting.Visuals.RenderableSeries.BaseRenderableSeries.NearestHitResult(Point mouseRawPoint, Double hitTestRadiusInPixels, SearchMode searchMode, Boolean considerYCoordinateForDistanceCalculation)
   at SciChart.Charting.Visuals.RenderableSeries.BaseRenderableSeries.HitTestInternal(Point rawPoint, Double hitTestRadius, Boolean interpolate)
   at SciChart.Charting.Visuals.RenderableSeries.BaseRenderableSeries.HitTest(Point rawPoint, Double hitTestRadius, Boolean interpolate)
   at SciChart.Charting.Visuals.RenderableSeries.BaseRenderableSeries.VerticalSliceHitTest(Point rawPoint, Boolean interpolate)
   at SciChart.Charting.ChartModifiers.RolloverModifier.GWB(Point D)
   at SciChart.Charting.ChartModifiers.RolloverModifier.BY.MoveNext()
   at SciChart.Charting.Common.Extensions.EnumerableExtensions.RU.MoveNext()
   at SciChart.Core.Extensions.EnumerableExtensions.ForEachDo[T](IEnumerable1 enumerable, Action1 operation)
   at SciChart.Charting.ChartModifiers.RolloverModifier.FillWithIncludedSeries(IEnumerable1 infos, ObservableCollection1 seriesInfos)
   at SciChart.Charting.ChartModifiers.RolloverModifier.HandleMasterMouseEvent(Point mousePoint)
   at SciChart.Charting.ChartModifiers.InspectSeriesModifierBase.TUB(Point D)
   at SciChart.Charting.ChartModifiers.InspectSeriesModifierBase.HandleMouseEvent(ModifierMouseArgs e)
   at SciChart.Charting.ChartModifiers.InspectSeriesModifierBase.OnModifierMouseMove(ModifierMouseArgs e)
   at SciChart.Charting.ChartModifiers.ModifierGroup.<>c.OB(IChartModifier D, ModifierEventArgsBase I)
   at SciChart.Charting.ChartModifiers.ModifierGroup.FTB(Action2 D, ModifierEventArgsBase I)
   at SciChart.Charting.ChartModifiers.ModifierGroup.OnModifierMouseMove(ModifierMouseArgs e)
   at SciChart.Core.Utility.Mouse.MouseManager.UB(ModifierMouseArgs D, IReceiveMouseEvents I, Boolean J)
   at SciChart.Core.Utility.Mouse.MouseManager.ZDB.M(IReceiveMouseEvents D)
   at SciChart.Core.Extensions.EnumerableExtensions.ForEachDo[T](IEnumerable1 enumerable, Action1 operation)
   at SciChart.Core.Utility.Mouse.MouseManager.JB(IReceiveMouseEvents D, ModifierMouseArgs I, Action3 J)
   at SciChart.Core.Utility.Mouse.MouseManager.GB(IPublishMouseEvents D, IReceiveMouseEvents I, MouseEventArgs J, MouseButtons M, Action3 O)
   at SciChart.Core.Utility.Mouse.MouseManager.AEB.T(Object D, MouseEventArgs I)
   at A.LEB.S(MouseEventArgs D)
   at A.LEB.M(Object D, MouseEventArgs I)
   at System.Windows.Input.MouseEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
   at System.Windows.Input.InputManager.ProcessStagingArea()
   at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
   at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
   at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
   at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at System.Windows.Application.RunDispatcher(Object ignore)
   at System.Windows.Application.RunInternal(Window window)
   at System.Windows.Application.Run(Window window)
   at System.Windows.Application.Run()
   at XXX.App.Main()
   at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
   at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

I have an impulse series chart, and with SciChart v3.x the rollover modifier line would “snap” to the nearest point. Since migrating to v6.5 this no longer happens – only the rollover marker snaps, not the vertical line. Setting UseInterpolation=”False” has no effect.

I’ve only noticed this on the impulse series, and the rollover line does still snap on other types (e.g. line, scatter). I just wanted to check that I’m not missing something, or if there any way to reinstate this snapping behaviour?

Hi,

NOTE: Still using Scichart 1.7 here…

I have two questions about the rollovermodifier behaviour:

1. As you can see in the picture, when rolling over the chart, sometimes the Xvalues of the series are not aligned. Is it possible to force this to be the same? Basically i always want the Xvalue to be the same for all the series when rolling over, would be nice to have the xvalue where the vertical bar is shown…
   

2. Might be just the chart behaviour, but is it possible to have the rollover feedback performed for values not in the visible range? When zoomed in, and for instance the top of the columnBar is not within the range, the seriesinfo is not shown for this datapoint.

Thanks a lot for the feedback.

It seems most of the modifiers bring up tooltip data with a pan, and then it goes away when the user lifts their finger. Is there any way to bring up tooltip data with a tap (and does not go away when the finger has lifted)? The main problem that we’re trying to solve is that we would like to be able to pan to look at the chart (and don’t want an axis pan), but would also like to bring up tooltip data.

Hi
I am trying out JS SciChart based on the Blazor example you have posted more than a year ago.
I cannot get the auto scaling to work by code (the default behavior does auto scale once right after adding the data). Calling sciChartSurface.zoomExtents(); (or zoomExtentsX() and zoomExtentsY() after one another) does zoom into a very details portion of the graph.

Also (maybe related) the tooltip does not update when moving the cursor around, it always keeps the same data. I tried using CursorModifier as well as RolloverModifier, both having the same problem.

Attached the JS code and the c# files and a picture how this looks like after calling the autoScale() method.

Thanks for any help
Regards
Reto

Hello, I’m using rollover modifier. By default data label is in first line, and data value is in second line. How can I modify it to have label and value in single line?

I have several series on a surface and currently use the Rollovermodifier. It highlights the datapoint on each series that intersects with the current vertical line of the RolloverModifier. However, I don’t seem to be able to display the corresponding y-values on the Y-Axis. How can I accomplish such? Is there any easy way to show the y-value of each series on the y-Axis that intersects with the vertical line of the Rollovermodifier?

I only want to move the RolloverModifier if the left mouse button is pressed and with Left and Right Keys?

I set a rolloverModifier to a CandlestickSeries, but I can not find a API to hide RolloverMarker,I only find a article about WPF(https://www.scichart.com/documentation/v5.x/webframe.html#RolloverModifier.html)， how could I hide RolloverMarker or change the style of RolloverMarker in Android?

Hello,

I am currently using a rollover modifier to display tooltip values on the trend. Whenever a data point is clicked however, the trend stretches so this point is along the right hand axis, and it pans so this point is along the x-axis. Is there a way to disable this feature?

Here are my modifier declarations:

<SciChart:SciChartSurface.ChartModifier>
            <SciChart:ModifierGroup>
                <SciChart:RubberBandXyZoomModifier  IsXAxisOnly="False"/>
                <SciChart:XAxisDragModifier/>
                <SciChart:CursorModifier ShowAxisLabels="False"/>
                <SciChart:RolloverModifier ReceiveHandledEvents="False" ShowTooltipOn="Always" ShowAxisLabels="True" UseInterpolation="True" SnapsToDevicePixels="False" TooltipLabelTemplate="{StaticResource RolloverLabelTemplate}"/>
            </SciChart:ModifierGroup>
        </SciChart:SciChartSurface.ChartModifier>

Thanks,
Andrew

I have a chart with multiple series, and I would like to have the RolloverModifier behavior for all selected series, but with a single tooltip combining the values for all selected series rather than a separate tooltip per series (similar to the CursorModifier)

Is there a way to do one of the following?

1. Merge the tooltips from the RolloverModifier?
   OR
2. Only show the vertical crosshair from the CursorModifier, and snap the crosshair to the closest point in the series?

The RolloverModifier is closer to the behavior I want, the only change I would want is the merged tooltip.

Thank you for your previous response however I would like to know how to recover the Date value from the AxisInfo parameter of the updateInternal method of the AxisToolTip class when used with a DateAxis.

To give context to the question. I am using a DateAxis for the xAxis on this chart and specifying a customised AxisInfoProvider as in the ‘CustomizationRolloverModifierTooltips’ example. When the RolloverModifier highlights some points and if ShowAxisLabels is true then the customised version of the updateInternal method of a customised AxisToolTip is called to to display the xAxis value on the axis.

The AxisInfo object contains a dataValue member variable the question then is: how to convert this back to a Date object.

Dear All:

I have been looking for a good way to obtain data from a multi-line chart (more than 1 y-value/y-axis) by either clicking an area that’s highlighted with a vertical line rollover, or selected with a vertical slice.

Basically I would like to take the data that I see in the Series Vertical Slices example, and extract the X-Axis values, as well as the Curve A, Curve B, and Curve C values that are shown on the vertical slice, so that I can insert that in something like a TextBox in a WPF.

Any idea how to do this, as well as with MVVM? (Will use MVC if necessary).

Thanks kindly!

— A

Hi

I’m having trouble making the RolloverModifier TooltipLabels stay inside the graphs canvas.

As you can see on the left most graph the colored sqaures and some of the digits has fallen outside the graphs canvas.
Also what are the TooltipLabels rules for clustering together, and rules for which side of the RolloverMarker the labels should appear on?

Still having a problem here… After setting the ClipModifierSurface on the SciChartSurface to False the time axis no longer clips the TooltipLabels.
But the graph itself clips the TooltipLabels when the label gets to large.

How do I make the labels stay inside the graph? As there is a lot of free space to the right of the labels.

Hi,

Is it possible to require two finger touch to pan the chart horizontally? I have a line chart with a rollover modifier so I don’t want to pan when I am moving the rollover modifier.

Hi there:

I am developing an application where the main chart is a heat map type one. I would like to have a custom cursor modifier to show some values of the x, y and z axes with limit digits. The problem is that so far I get these result:

EDIT: PLEASE INSERT AN IMAGE HERE

I would like to show only 1 decimal in the Z axis and 0 decimals en the X and Y axis. I have checked your modifiers demo but it seems to be not working for my heatmap chart. Any kind of advice about this issue would help me to have the application I am looking for.

The XAML of my chart is like this:

 <s:SciChartSurface x:Name="sciChart" Grid.Column="1" Grid.Row="3" Padding="0" BorderThickness="0" MouseDown="SciChart_MouseDown" Margin="0">
            <s:SciChartSurface.RenderableSeries>
                <s:FastUniformHeatmapRenderableSeries x:Name="heatmapSeries" 
                                                      Opacity="0.9"/>
            </s:SciChartSurface.RenderableSeries>

            <s:SciChartSurface.XAxis>
                <s:NumericAxis DrawMajorBands="True"  
                               DrawLabels="False"
                               TextFormatting="0N"
                               GrowBy="0, 1"
                               s:RolloverModifier.AxisLabelContainerStyle="{StaticResource AxisLabelStyle}" 
                               s:RolloverModifier.AxisLabelTemplate="{StaticResource AxisLabelTemplate}" 
                               s:CursorModifier.AxisLabelContainerStyle="{StaticResource CursorAxisLabelStyle}"/>
            </s:SciChartSurface.XAxis>

            <s:SciChartSurface.YAxis>
                <s:NumericAxis DrawMajorBands="True" 
                               GrowBy="0, 1"
                               DrawLabels="False" 
                               VisibleRange="0,249"  
                               TextFormatting="0"/>
            </s:SciChartSurface.YAxis>

            <s:SciChartSurface.ChartModifier>
                <s:ModifierGroup>
                    <s:RolloverModifier x:Name="RolloverModifier"
                                    IsEnabled="True"
                                    ShowTooltipOn="Always" />
                    <!--<s:CursorModifier IsEnabled="True" ShowTooltip="True" ShowTooltipOn="MouseOver"
                        ShowAxisLabels="true" SourceMode="AllSeries"/>-->
                    <s:CursorModifier x:Name="CursorModifier"
                                  IsEnabled="False"
                                  UseInterpolation="False"
                                  ShowAxisLabels="False"
                                  ShowTooltip="True"
                                  ShowTooltipOn="MouseOver"/>
                    <!--<s:VerticalSliceModifier IsEnabled="True">
                        <s:VerticalSliceModifier.VerticalLines>
                            <s:VerticalLineAnnotation IsEditable="false"
                                                  LabelPlacement="Axis"
                                                  ShowLabel="true"
                                                  LabelTextFormatting="0"/>
                        </s:VerticalSliceModifier.VerticalLines>
                    </s:VerticalSliceModifier>-->
                </s:ModifierGroup>

            </s:SciChartSurface.ChartModifier>
        </s:SciChartSurface>

Thanks in advanced.

hello, i use RolloverModifier on my chart, can i hide Pointmarker?