Tag: Crosshair

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

Hi,

I want to use a CursorModifier that snaps to series, but not all series. I can see the BaseRenderableSeriesViewModel has, for example, IncludeTooltipModifier, but there is no IncludeCursorModifier property so I haven’t been able to get it to work out of the box.
Is this a missing feature?
https://www.scichart.com/documentation/win/current/webframe.html#CursorModifier.html
https://www.scichart.com/documentation/win/current/webframe.html#TooltipModifier.html

Are there any work arounds? I was thinking of adding metadata to a series, but there is no metadata for the entire series, just a metadata for the point markers.

I also tried to create a class that inherits from, for example, LineRenderableSeriesViewModel, that has an IncludeCursorModifier, or similarly named property. The issue I had with that is that when I create my own inherited version of CursorModifer I only have access to the ParentSurface?.RenderableSeries which is not the ViewModel version of the series, and thus that information seems to be lost – I can’t cast a member of RenderableSeries to my custom MyLineRenderableSeriesViewModel, thus I can’t inspect whether it should be included in the cursor modifier.

I appreciate the help.

Matt

I am using a custom CursorModifier class in my WPF code. I have created a class inherited from CursorModifier for this purpose. Now I want to apply cross-hair cursor style to my chart. The style in XAML is not getting applied at all. However, when I use the CursorModifier directly (instead of custom modifier class) in XAML, then it applies.

If I changed the TargetType to “loca:MyCursorModifier”, then it gives error “The memeber StrokeThickness is not recognized” & “The “memeber Stroke is not recognized”.

<UserControl.Resources>
    <Style x:Key="CrossLineStyle" TargetType="Line">
        <Setter Property="StrokeThickness" Value="1" />
        <Setter Property="Stroke" Value="Black " />
    </Style>
</UserControl.Resources>

<local:MyCursorModifier ShowTooltip="False" ShowTooltipOn="Never" ShowAxisLabels="False" SourceMode="AllSeries" LineOverlayStyle="{StaticResource CursorLineStyle}"/>

So I want to draw multiple charts so is there any way I can have stacked yAxes like yAxis 2 should be drawn below yAxis1. I have gone through your example and there I got that we can add multiple surface but its becoming difficult for us to show a crosshair on all surfaces since we have a custom cross hair. Can you guide on same. Thanks in advance

Hey again!

Is there kind of a delegate that notify me if the user uses the crosshair/SCIRolloverModifier?
I want to know which value he is inspecting to show him further information outside the chart for this datapoint.

Thanks and Greeting
Benedikt