FeaturedMeasure does not appear when StartValue is not 0

[Alex]

Hi,
I need to set the start value of my bullet graph to a non-zero value (80 for example), but this scenario does not seems to work.
This works perfectly (i.e. I see the FeaturedMeasure spanning from 90 to 120, and StartValue is set to 0)
<telerikDataVisualization:RadBulletGraph
            TickStep="10"
            LabelStep="20"
            StartValue="0"
            EndValue="200"
            FeaturedMeasureStartValue="90"
            FeaturedMeasure="120"
            FeaturedMeasureBrush="{StaticResource PhoneForegroundBrush}"/>

But this does not work (i.e. FeaturedMeasure is not shown at all, and the only change was setting the StartValue to 80).
<telerikDataVisualization:RadBulletGraph
            TickStep="10"
            LabelStep="20"
            StartValue="80"
            EndValue="200"
            FeaturedMeasureStartValue="90"
            FeaturedMeasure="120"
            FeaturedMeasureBrush="{StaticResource PhoneForegroundBrush}"/>

What am I missing?
Thanks
Alex.

[Victor]

Hi Alex,

Thanks for writing.
This behavior is by design. Please have a look at our online help, and more specifically, the section that describes the featured measure. When the scale of the bullet graph starts from a value different than zero, the featured measure changes its appearance. You have to tweak the appearance since its fill is PhoneBackgroundBrush by default. You can do this by specifying a data template for the FeaturedMeasureAlternativeTemplate property. For example:

<telerikDataVisualization:RadBulletGraph
    TickStep="10"
    LabelStep="20"
    StartValue="80"
    EndValue="200"
    FeaturedMeasureStartValue="90"
    FeaturedMeasure="120"
    FeaturedMeasureBrush="{StaticResource PhoneForegroundBrush}">
    <telerikDataVisualization:RadBulletGraph.FeaturedMeasureAlternativeTemplate>
        <DataTemplate>
            <Ellipse Width="10"
                     Height="10"
                     Fill="{StaticResource PhoneForegroundBrush}"/>
        </DataTemplate>
    </telerikDataVisualization:RadBulletGraph.FeaturedMeasureAlternativeTemplate>
</telerikDataVisualization:RadBulletGraph>

Just to clarify this behavior is implemented according the official bullet graph spec written by Stephen Few.

Please write again if you have other questions.


Regards,
Victor
Telerik