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[Solved] Multiple line series with ScrollAndZoom range problem

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Minh asked on 17 Nov 2011, 02:05 AM

chart.jpg

I have a chart with multiple line series, dynamically bound from WCF services. The chart has Y-axis zoom and scroll, and I already set the MinZoomRange. The problem is even with the MinZoomRange set to 0.05, I still can move the zooming bar all the way down where the two ends of the bar touch each other and thus zoomrange is now 0, this crashes the application.

I read somewhere on this forum that zooming has some issues with multiple line series? Please find a solution for this problem soon, it is critical to our business partners.

The telerik version we are using is RadControls for Silverlight Q2 2011 SP1

<telerik:RadChart HorizontalAlignment="Left" Margin="12,98,0,7" Name="radChart1" Width="913" Grid.ColumnSpan="3">

<telerik:RadChart.DefaultView>

<telerik:ChartDefaultView>

<telerik:ChartDefaultView.ChartArea>

<telerik:ChartArea LegendName="chartLegend">

<telerik:ChartArea.ZoomScrollSettingsY>

<telerik:ZoomScrollSettings ScrollMode="ScrollAndZoom" MinZoomRange="0.05"/>

</telerik:ChartArea.ZoomScrollSettingsY>

<telerik:ChartArea.AxisY>

<telerik:AxisY AutoRange="True"/>

</telerik:ChartArea.AxisY>

<telerik:ChartArea.AxisX>

<telerik:AxisX AutoRange="True"/>

</telerik:ChartArea.AxisX>

<telerik:ChartArea.DataSeries>

<telerik:DataSeries>

</telerik:DataSeries>

</telerik:ChartArea.DataSeries>

</telerik:ChartArea>

</telerik:ChartDefaultView.ChartArea>

<telerik:ChartDefaultView.ChartLegend>

<telerik:ChartLegend x:Name="chartLegend" UseAutoGeneratedItems="True"/>

</telerik:ChartDefaultView.ChartLegend>

</telerik:ChartDefaultView>

</telerik:RadChart.DefaultView>

</telerik:RadChart>

private SeriesMapping AddSeriesMapping(ISeriesDefinition seriesDefinition, string legendLabel, string fieldName, Color color)

{

// add mapping for the series

SeriesMapping mapping = new SeriesMapping()

{

SeriesDefinition = seriesDefinition,

LegendLabel = legendLabel,

};

if(color != Colors.Transparent)

mapping.SeriesDefinition.Appearance.Stroke = new SolidColorBrush(color);

InteractivitySettings interactive = new InteractivitySettings();

interactive.HoverScope = InteractivityScope.Series;

interactive.SelectionScope = InteractivityScope.Series;

mapping.SeriesDefinition.InteractivitySettings = interactive;

// add item mapping for each property in the item

mapping.ItemMappings.Add(new ItemMapping()

{

DataPointMember = DataPointMember.LegendLabel,

});

mapping.ItemMappings.Add(new ItemMapping()

{

DataPointMember = DataPointMember.YValue,

FieldName = fieldName

});

return mapping;

}

void MetricService_GetAllConsolidatedMetricsCompleted(object sender, GetAllConsolidatedMetricsCompletedEventArgs e)

{

radChart1.SeriesMappings.Clear();

//setting up chart default values

//radChart1.DefaultView.ChartArea.AxisY.Step = 100000.00;

//radChart1.DefaultView.ChartLegend.UseAutoGeneratedItems = false;

//radChart1.DefaultView.ChartArea.ZoomScrollSettingsY.MinZoomRange = 5000.00;

List<Stat> stats = (List<Stat>)e.Result;

radChart1.DefaultView.ChartTitle.Content = "Consolidated Metrics";

radChart1.ItemsSource = stats;

radChart1.DefaultView.ChartLegend.Header = "Metrics Legend";

radChart1.SeriesMappings.Add(AddSeriesMapping(new SplineSeriesDefinition(), "One", "One", Colors.Red));

radChart1.SeriesMappings.Add(AddSeriesMapping(new SplineSeriesDefinition(), "Two", "Two", Colors.Blue));

radChart1.SeriesMappings.Add(AddSeriesMapping(new SplineSeriesDefinition(), "Three", "Three", Colors.Green));

radChart1.SeriesMappings.Add(AddSeriesMapping(new SplineSeriesDefinition(), "Total", "Total", Colors.Orange));

this.radChart1.CreateItemStyleDelegate = CreateAllConsolidatedCustomColors;

CreateXAxisLabels(stats);

busyIndicator.IsBusy = false;

}

6 Answers, 1 is accepted

answered on 22 Nov 2011, 05:09 PM

Hello Minh,

I am afraid we did not release an internal build yesterday. It should go public later today. To download it, please follow the next steps (note, that you should do this using the license holder's account):

Click on "Your Account" in the left upper corner of the page.
Click on "Download and Manage Your Products".
Click on "Download installer and other resources".
Click on "Latest Internal Builds" link in the RadControls for Silverlight section.

Kind regards,
Ves
the Telerik team

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