RadCartesianChart Data refresh.

[Lee]

Hi.

I have one problem.

My source is below.

             <telerik:RadCartesianChart.SeriesProvider>
                <telerik:ChartSeriesProvider Source="{Binding Series}">
                    <telerik:ChartSeriesProvider.SeriesDescriptors>
                        <telerik:CategoricalSeriesDescriptor ItemsSourcePath="Data" ValuePath="Value" CategoryPath="LocalTime">
                            <telerik:CategoricalSeriesDescriptor.Style>
                                <Style TargetType="telerik:LineSeries">
                                    <Setter Property="StrokeThickness" Value="1"/>
                                    <Setter Property="Visibility" Value="{Binding Name , Converter={StaticResource pointFocusConverter}}"/>
                                    <Setter Property="ShowLabels" Value="{Binding Path=DataContext.Ribbon.IsShowLabel, RelativeSource={RelativeSource AncestorType={x:Type UserControl}}}"/>
                                    <Setter Property="LegendSettings">
                                        <Setter.Value>
                                            <telerik:SeriesLegendSettings Title="{Binding Name}" />
                                        </Setter.Value>
                                    </Setter>
                                    <Setter Property="VerticalAxis">
                                        <Setter.Value>
                                            <MultiBinding Converter="{StaticResource multiVerticalAxisConverter}">
                                                <Binding Path="Data"/>
                                                <Binding Path="DataContext.Series" ElementName="lineChart"/>
                                            </MultiBinding>
                                        </Setter.Value>
                                    </Setter>
                                </Style>
                            </telerik:CategoricalSeriesDescriptor.Style>
                        </telerik:CategoricalSeriesDescriptor>
                    </telerik:ChartSeriesProvider.SeriesDescriptors>
                </telerik:ChartSeriesProvider>
            </telerik:RadCartesianChart.SeriesProvider>


Currently, good work.

But I want to wort setter about [Property="VerticalAxis"]

Now chart is changed by changing [ItemsSourcePath="Data"]

But converter of 'VerticalAxis' do not work.

Why is this not work?

What should I do for working of converter ?

[Petar Marchev]

Hi Lee,

Thank you for the provided code snippet. I created a small test project based on it. Everything works as expected. I debugged the multibinding converter and the proper values are passed to it. I have attached this project for you to check it out. Let us know if you have any additional questions.

Regards,
Petar Marchev
Telerik

 

 

[Lee]

Thank you for reply.

I wonder one thing.

Currently, my code is using timer.

So chart is refreshed.

But precessing is slow.

What should I do for faster processing.

[Petar Marchev]

Hello Lee,

Can you share with us more information?

1. How many series do you have?

2. Do you know the number of series in advance?

3. How many data items does a series have?

4. How often do the items source change?

5. What are the changes? Do you add new items, remove new items or update present items' values?

6. What render options do you use? Have you tried bitmap or direct2D (you can find a direct2D demo in our WPF QSF examples)?

7. What makes you think that it is the processing that is slower? Are you sure its not the drawing part that is slower?


Regards,
Petar Marchev
Telerik