How to include errorbar in WPF graph?

[gaspard]

Hello,

I'm looking for examples of error bar included in WPF graph control.

thanks

[Antonin_G.]

Hi Gaspard,

What kind of data are you manipulating ?

Regards,

[Antonin_G.]

Hi again,

you will find on the link below an example of error bar graph in Measurement Studio:

http://zone.ni.com/devzone/cda/epd/p/id/430

This example program creates error bars on a Measurement Studio .NET graph using extensibility.

Hope it will help 😉

Regards,

[gaspard]

Hi,

Thank you for your response.

I use regularly error bar for NI ScatterGraph ctrl in Windows form and the class ErrorBarPlot (like in your example). With WPF form, the Ni graph control does not show error bar facilities like scatterGraph . Do you know a possibility to add error bar on WPF graph or WritableGraph? I have perhaps missed a part of Graph control and the associated xaml  option.

regards

[phansen · Accepted solution]

You haven’t missed anything: error bars are one of the features from Windows Forms that we did not have time to implement for the first version of the WPF graph controls.

Attached is a quick demonstration of a custom error bar renderer for the WPF graph. From XAML, you can use it in a plot like so:

    <ni:Graph Name="graph">
        <ni:Graph.Plots>
            <ni:Plot>
                <ni:PlotRendererGroup>
                    <my:ErrorBarRenderer />
                    <ni:LinePlotRenderer Stroke="Green" />
                </ni:PlotRendererGroup>
            </ni:Plot>
        </ni:Graph.Plots>
    </ni:Graph>

The example uses hard-coded values, but you should be able to adapt the code to fit your situation.

[gaspard]

Thanks Phansen

This is a good starting code to study error bar in WPF graph control.