6 replies to this topic

[Randy Minder]

We are using Visifire v4.5.3 for WPF. We have a chart with a total of 5 line series. Each line series contains roughly 700 points. If we use a QuickLine series, the chart renders in approximately 1 second. If we use a Line series, the chart renders in roughly 50 seconds. There will be times we'll need to render this chart as Line series instead of QuickLine series. However, a 50 second render time is unacceptable.

Why would it take 50x longer to render this chart using Line series, and is there anything we can do to improve this performance when using a Line series?

Thanks very much,

Randy

[vivek]

Randy,

As you have 5 series with 700 DataPoints each (3500 DataPoints in total), it should not take more than 2 - 3 sec to draw. Visifire's Line series is capable to render those number of DataPoints within 2 - 3 sec. Can you please tell me how are you adding the DataPoints? It would be helpful if you can provide the sample code for the same.

[Randy Minder]

VIvek - I would be glad to send you my C# and XAML code. How should I do so?

[vivek]

You have created a Ticket for the same. we will continue our discussion there.

[Xelom]

I think this issue might be caused by your method for adding datapoints but here are some performance tips for line series

Quickline doesn't show datapoints as you can see. And if you want to see them, you have to use line chart.

You can increase your performance with:

<vf:Chart x:Name="MyChart" Bevel="False" LightingEnabled="False" Background="White">
            <vf:Chart.Legends>
                <vf:Legend ShadowEnabled="False"></vf:Legend>
            </vf:Chart.Legends>
            <vf:Chart.Titles>
                <vf:Title ShadowEnabled="False"></vf:Title>
            </vf:Chart.Titles>
            <vf:Chart.PlotArea>
                <vf:PlotArea ShadowEnabled="False"></vf:PlotArea>
            </vf:Chart.PlotArea>
</vf:Chart>

Regards

[Randy Minder]

Xelom - Thank you. I actually find out my performance problem. Don't ever try to render a Visifire chart in debug mode. It can take 50x longer to render.

Thank you for your suggestion. I'm curious though. What is the performance boost of setting the Chart.PlotArea.ShadowEnabled to false versus whatever it is we give up by not using it?

Randy Minder

[vivek]

Randy,

Yes performance might degrade while applying shadow to PlotArea as we are using DropShadowEffect. Please check out the following link for more info.
http://blogs.msdn.co...moderation.aspx