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I have a RolloverModifier based primarily on the example:

    <Border 
        Grid.Row="0" 
        HorizontalAlignment="Stretch" 
        VerticalAlignment="Top" 
        BorderBrush="#55000000" 
        BorderThickness="1" 
        Margin="70,0,15,0"
        Padding="5"
        CornerRadius="5"
        MinWidth="850" >

        <ItemsControl DataContext="{Binding ElementName=rolloverModifier}" ItemsSource="{Binding Path=RolloverData.SeriesInfo}" HorizontalAlignment="Left">
            <ItemsControl.Style>
                <Style TargetType="{x:Type ItemsControl}">
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding Path=RolloverData.SeriesInfo,Converter={StaticResource EmptyCollectionConverter}}" Value="True">
                            <Setter Property="Template">
                                <Setter.Value>
                                    <ControlTemplate TargetType="{x:Type ItemsControl}">
                                        <TextBlock Text="No data selected" Margin="5,0" HorizontalAlignment="Center" />
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                        </DataTrigger>
                    </Style.Triggers>
                </Style>
            </ItemsControl.Style>

            <ItemsControl.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal">
                        <TextBlock Text="{Binding XValue,Converter={StaticResource StringFormatConverter},ConverterParameter={}{0:dd MMM yyyy HH:mm:ss}}"
                                   Margin="5,0">
                            <TextBlock.Style>
                                <Style TargetType="{x:Type TextBlock}">
                                    <Setter Property="Visibility" Value="Collapsed" />
                                    <Style.Triggers>
                                        <DataTrigger Binding="{Binding SeriesName}" Value="Load">
                                            <Setter Property="Visibility" Value="Visible" />
                                        </DataTrigger>
                                    </Style.Triggers>
                                </Style>
                            </TextBlock.Style>
                        </TextBlock>

                        <Polygon 
                            Points="0 0.5 0.5 1 1 0.5 0.5 0" 
                            Stretch="Fill" 
                            HorizontalAlignment="Stretch" 
                            VerticalAlignment="Stretch" 
                            Fill="{Binding SeriesColor,Converter={StaticResource ColourToBrushConverter}}" 
                            StrokeThickness="0" 
                            Width="7" Height="7"
                            Margin="10,0,5,0" />

                        <TextBlock Text="{Binding .,Converter={StaticResource SeriesValueConverter}}" Margin="5,0" />
                    </StackPanel>
                </DataTemplate>
            </ItemsControl.ItemTemplate>

            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <StackPanel Orientation="Horizontal" IsItemsHost="True" />
                </ItemsPanelTemplate>
            </ItemsControl.ItemsPanel>
        </ItemsControl>
    </Border>

The FastLineRenderableSeries is displayed depending on a databound BaseRenderableSeries.IsVisible.

The serieses always have identical x values. I’ve taken advantage of this to display the x value in the rollover border by using the XValue textblock with a trigger bound to the name of the series, if it’s the first then it displays its x value.

If a series is not visible, there is no Item and therefore the DataTemplate isn’t used. If the first series is hidden, I don’t get an x value in my rollover modifier.

Can you see a way of displaying the x value reliably?

Thanks for your time,
Andy C

I’m creating stock OHLC Bar Charts. My users have asked me if I can create a chart such that when the trading is open and there are no trades, the X Axis behaves like a DateTimeAxis and empty space appears on the chart in the X direction between trades. However, they would like the times that trading to does not take place to not appear on the X Axis so that there is no space between the last minute of open trading for one trading session and the next minute of trading for the next session. Is such a chart possible with Sci Charts?

Hi

From the post that I have been reading it shall be possible to use virtualized dataplots, where data is fetched on demand. I also undertand that you have plans to integrate this functionality tighter with your API.

My questions:
* do you have an example of a virutalized dataplot?
* if, and then when will you have more tightly integrated support for virtualzied dataseries?

Hi,
I’m trying to create a custom axis class, inheriting NumericAxis but the labels don’t show anymore. My code :

public class CustomAxis : NumericAxis {}

                           <SciChart:SciChartSurface.XAxis>
                                <core:CustomAxis DrawMinorGridLines="False" DrawMajorGridLines="False" AutoRange="False" Height="{Binding XAxisHeight, Mode=OneWay}" 
                                          VisibleRange="{Binding ParentViewModel.XVisibleRange, Mode=TwoWay}" VisibleRangeChanged="XAxis_OnVisibleRangeChanged">
                                </core:CustomAxis>
                            </SciChart:SciChartSurface.XAxis>

The user should be able to change the label formatting, eg.: “3000ms” or “00:03:00”.
How can I dynamically change axis formatting ? The axis data type will always be double.

Hi,

I try to catch MouseEnter on RenderableSerie to simulate effect on the serie.
But the event is never catch.

ser.MouseEnter += Ser_MouseEnter;

ser.AddHandler(UIElement.MouseEnterEvent, (RoutedEventHandler)OnMouseEnterCallMeAlways);

They are in she SciChartSurface an element than block the route ?

Thanks

Hello,

I’m encountering an issue where I see artifacts being drawn on a plot with a large amount of data (on the order of 10^6 of points). The artifacts are simply lines being drawn from one point to another, on top of the usual plot lines that I would expect to be drawn. These lines tend to flicker during a pan, and I think they are being caused by resampling of the data during a pan. The only resampling modes that this does not occur with are Max and None.

In general, what is the best resampling mode to avoid artifacts and obtain good performance? The data is essentially of a time-series nature (numeric value on Y axis, date on X axis), with fairly consistent spacing between points. I tried Nyquist resampling mode, and it seemed identical to MinMax.

Any insight would be appreciated!

Hello,

We are working on developing an application that will be deployed on tug boats.
Our end users have asked that we provide a “night mode” to help reduce glare at night as it gets very dark out on the open water and any light reflected off windows seems incredibly bright.

Has anyone previously asked for a simple black and red “night mode” graph theme? If not, would it be possible to put one together?

Thanks,

Aaron

Hi,

I’m not making any sense of the AutoRange behavior in version 2.x. First, the documentation lists choices of .Always, .Auto, and .Never, but Visual Studio IntelliSence tells me the choices are .Always, .Once, and .Never.

The behavior I want is for the data to be fully visible (as after ZoomExtents) initially, but then to response to rubberband zooming and double-click unzooming. “.Once would seem to be the logical choice, but this doesn’t work. Instead, I get a Y-axis range of 0 to 9.

Help?

Thanks,
–George
p.s. I’m using MVVM, and I may have forgotten the trick to calling .ZoomExtents from my ViewModel.

Hi,

We are using SciChart with 4 dataseries inside.
We also display 4 axis at the side.
We like to move one of the series up or down, so we can set it on top of another serie for easier compare.
At the moment, if we move it by dragging the Yaxis, only the max or the min value will change, so the view will change (Ymax – Ymin will be different everytime).

Is there are way to move the serie up or down and keep the size the same (so Ymax – Ymin) will be the same?

Thanks…

I am dynamically creating renderable series. How can I add the point marker also with it

_renderableSeries1 = new FastLineRenderableSeries();
using (SciRealTimeChart.SuspendUpdates())
{
    _dataManager.LoadBuffers(_plDVM, _ioVariables[0], count);
    _renderableSeries1.SeriesColor = (Color)ColorConverter.ConvertFromString(Constants.Constants.HEX_CODE_RED);
    _renderableSeries1.StrokeThickness = 1;
    _renderableSeries1.XAxisId = "DateTimeAxisID";
    _renderableSeries1.YAxisId = Constants.Constants.YAXIS + count;
    _renderableSeries1.DataSeries = _plDVM.DataSeries._DataSeries1;

}

Hi,

I’m using the out of the box RolloverModifier :

            <s:SciChartSurface.ChartModifier>
                <s:ModifierGroup>
                    <s:RolloverModifier x:Name="myRolloverModifier" ShowTooltipOn="Always" />
                </s:ModifierGroup>
            </s:SciChartSurface.ChartModifier>

1. Setting RolloverModifier.Visibility to hidden has no apparent effect. How do I hide it (especially the vertical bar)?

2. When my code behind sets myRolloverModifier.ShowAxisLabels = false, the behavior is as expected with the exception that the last shown x-value is left hanging on the chart until user moves the mouse off the plot. Is this a bug? Is there a workaround?

Thanks,
Dave

Applying the following style to a FastLineRenderableSeries works fine:

<Style TargetType="s:FastLineRenderableSeries">
        <Setter Property="SeriesColor" Value="LightGreen" />
        <Setter Property="PointMarkerTemplate">
            <Setter.Value>
                <ControlTemplate>
                    <s:EllipsePointMarker Fill="LightGreen" Stroke="LightGreen" StrokeThickness="3" Width="7" Height="7"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

But the following does not work at all:

<Style TargetType="s:BaseRenderableSeries">
        <Setter Property="SeriesColor" Value="white"/>
        <Setter Property="PointMarkerTemplate">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type s:BasePointMarker}">
                    <s:EllipsePointMarker Fill="White" Stroke="White" StrokeThickness="3" Height="5" Width="5"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

a) Could this be a bug? I want this style to apply to all FastLineRenderableSeries and XyScatterRenderableSeries.
b) I noticed the style is only applied if SeriesColor and PointMarkers are not assigned at the time of RenderableSeries instantiation.

Hi Andrew

We would like to be able to set SuspendUpdates in an MVVM scenario as we are using ObservableCollection of IChartSeriesViewModel to drive chart datatemplates.

We are getting some flickering when updating multiple series on the chart due to y axis rescaling.

Is there a bindable property on the SciChartSurface we can use for this? Or do you have another approach?

Thanks in advance
Regards
Ian

I’m working on a Fifo series chart that fills up to its capacity, then calls xaxis.SuspendUpdates() to freeze the labels, then the line scrolls by – the view is of the last x seconds of data.

When SuspendUpdates has been called, then I maximize the app, the x-axis doesn’t resize properly, which is not really surprising. If I do a quick ResumeUpdates, then SuspendUpdates again, the label numbers have changed to the most recent values – also expected. So, how can I tell a suspended x-axis to refresh/redraw/resize the axis to properly fill, but not ResumeUpdates?

I am currently evaluating the use of SciChart for an application we are developing that requires real-time data graphing. The application uses a TabControl, with different usercontrols in each TabItem .

So I am attempting to replicate the RealTimeCursor example inside a tabItem of a Tabcontrol. The problem I am having is with the rollover legend. Basically the rollover legend appears only if the control is in the first TabItem but not if in the second or subsequent tabItem. Everything else appears to work correctly.

The problem is that the legend does not appear in the “graph” tab – unless the graph tab is the first tab, i.e. – legend appears in the Graph tab as it the first tab (“Test” is the second (empty) tab).

    <TabControl>
        <TabItem Header="Graph">
            <local:RealTimeCursors   x:Name="RealTimeChart"/>
        </TabItem>
        <TabItem Header="Test"></TabItem>
    </TabControl>

but legend does not appear if “Graph” tab is the second tab (now “Test” is the first tab) i.e.

    <TabControl>
        <TabItem Header="Test"></TabItem>
        <TabItem Header="Graph">
            <local:RealTimeCursors   x:Name="RealTimeChart"/>
        </TabItem>
    </TabControl>

As I want to include one graph inside a tabcontrol – and it is not the first tab – the legend is not appearing. I do not know how to fix this. Can you give me some pointers on how I should modify the RealTimeCursors example to work inside a tabcontrol? Thanks!

Hi,

I’m creating a custom legend and need to be able to let the user update the color of the entire series. I don’t necessarily need the power if your IPaletteProvider interface, as I don’t need to vary the color within the series.

The documentation states that SeriesInfo.SeriesColor is read/write, but even when I update the source explicitly, the binding does not seem to push the color to the renderable series:

private void cpickSeries_SelectedColorChanged(object sender, RoutedPropertyChangedEventArgs e)
        {
            System.Diagnostics.Debug.WriteLine(e.NewValue);
            
            var cp = sender as Xceed.Wpf.Toolkit.ColorPicker;
            if (cp != null)
            {
                BindingOperations.GetBindingExpression(cp, Xceed.Wpf.Toolkit.ColorPicker.SelectedColorProperty).UpdateSource();
            }

        }

I’ve turned on verbose logging and confirmed that no warnings are being generated by scichart. Am I approaching this incorrectly? Or is there a method I need to call on the series(which I have not found yet). I’ve confirmed the same behavior between XyScatterSeries and FastLine…

Thanks,
Dan.

Hi

I don’t understand how to disable dragging an annotation with mouse. I didn’t find anything in your documentation.

I have a simple annotation as follows:

                                <s:HorizontalLineAnnotation x:Name="line" IsEditable="False" IsManipulationEnabled="False"  IsAttached="True" Y1="2020" ShowLabel="True" LabelValue="" LabelPlacement="TopRight" Stroke="Red"/>

tried with IsEditable=”False” IsManipulationEnabled=”False” IsAttached=”True” but nothing seems to work.

Could you please help me ?
thank you

Hi! I’m developing a data visualization tool for traders and I’m running into an issue when I try to add Data to the chart on both sides (beginning and end of OhlcDataSeries).

When I add data to the end of the chart it works fine, but when I tried adding data at the beginning it is not drawn in the chart and the appearance of the candlesticks changes to a flat line (look at the attached pictures).

I’m using a basic SciChartSurface with a DataTimeAxis as X and NumericAxis as Y. Both axes have AutoRange turned ON.

I’m using the Append() function to add the data, so that might be the issue. Should I use Insert or what solution would you recommend?

This functionality of adding data on both ends of the chart is very important because I’m listening to live market data while querying historic data from the DB as requested by the user.

Thanks.

Hello,
How can I change the scrollwidth of the scrollbar? I want to increase or decrease the width for example to 10…

Hallo,

Say that i zoom 8 times one after another into the chartsurface. Then when i doubleclick i zoom back to the extends with the ZoomExtentsModifier. However i would like to click somewhere and zoom back out step by step. How can i achieve this? Is there a simple option.

I’m trying to have two graphs which share the same X-Axis and have an overview control that zooms and pans. Everything is synchronized but zooming and panning with the overview control. For some reason it only applies to one surface. Below is segments of the code:

SciChartSurface surface = new SciChartSurface();
DateTimeAxis xaxis = new DateTimeAxis();
surface.XAxis = xaxis;
SciChartOverview overview = new SciChartOverview();
overview.ParentSurface = surface;
Binding bind = new Binding();
bind.Source = xaxis;
bind.BindsDirectlyToSource = true;
bind.Mode = BindingMode.TwoWay;
bind.Path = new PropertyPath("VisibleRange"); overview.SetBinding(SciChartOverview.SelectedRangeProperty, bind);
SciChartSurface surface2 = new SciChartSurface();
surface2.XAxis = xaxis;

Could you please help me figure out why it only zooms/pans on one surface?

Thanks,
Greg

I’m trying to set a property value from a property in my custom extension of BaseRenderableSeriesViewModel. Looking at the documentation, it seems this is what I need:

BaseRenderableSeriesViewModel.SetValue()

But I’m a little confused as to what it needs as an input, what exactly is the “ref Property”? Here’s what I’ve tried:

public class CustomEnumRenderableSeriesViewModel : BaseRenderableSeriesViewModel
{
    private float startY;
    public float StartY
    {
        get { return startY; }
        set {
            SetValue<float>(ref startY, value, "StartY");
        }
    }


    // Tell SciChart what type of RenderableSeries you want to instantiate
    public override Type RenderSeriesType
    {
        get { return typeof(CustomEnumRenderableSeries); }
    }
}

public sealed class CustomEnumRenderableSeries : CustomRenderableSeries
{
    public float StartY
    {
        get { return (float)GetValue(StartYProperty); }
        set { SetValue(StartYProperty, value); }
    }
    public static readonly DependencyProperty StartYProperty =
        DependencyProperty.Register("StartY", typeof(float), typeof(CustomEnumRenderableSeries), new PropertyMetadata(0f));
    ....

but the CustomEnumRenderableSeries’s StartY isn’t getting set. I’m not exactly sure what the Type T parameter should be. Is it the type of the property (float in this case) like I have? What then is the property reference I should be passing?

How to bind SciSurface to an array of System.Windows.Point. Do we need to convert to XYDataSeries always?

Hi

what I’m trying to achieve is displaying Candlesticks in a real time stock chart with added space between price bars. This empty space is very important as it’ll allow me to show further information regarding volumes per price level.

You can have a better understanding of what I’m trying to achieve by having a look at the following image.

I’m already at the point where I’m rendering both the candlesticks and labels correctly (via textannotations). It’s just that the whole graph is crowded and impossible to understand as annotations and price bars overlaps each other.

Thank you for your support,
Michele

Hello,

Just curious. Is there a maximum amount of Y-Axes that can be shown on a graph?