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RadialGauge Needle not drawn in the correct position

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Gauges

This is a migrated thread and some comments may be shown as answers.

Robert asked on 28 Mar 2011, 12:58 PM

Good afternoon,

There seems to be a problem with the positioning of the RadialGauge needle.
I have two buttons, one to decrement and another to increment the "value" of the needle. As the needle increments from "value" = 1 the positioning doesn't align correctly with gauge ticks.

For example:

Value = 1 - Displays 1
Value = 2 - Displays 1.9
Value = 3 - Displays 2.8
Value = 4 - Displays 3.75
....
Value = 8 - Displays 7.5

Here is my XAML:

<telerik:RadialGauge x:Name="radialGauge" Grid.Row="1"

Width="300"

Height="300">

<telerik:RadialScale Min="1"

Max="12">

<telerik:IndicatorList>

<telerik:Needle x:Name="needle"

Value="1"

IsAnimated="True"

Duration="0:0:2" />

</telerik:IndicatorList>

</telerik:RadialScale>

</telerik:RadialGauge>

Is there a fix for this?

*** I have the latest version of the WPF RadControls (2011_1_0315)

Thank you for your time,

Rob

3 Answers, 1 is accepted

answered on 28 Mar 2011, 03:57 PM

I've played around with the control a little bit more and discovered that if I alter the RadialScale "Max" setting to 11 rather than 12 then it works perfectly. I guess this is due to the number of major ticks displayed on the guage.

If I change the RadialScale "Max" value to say 6 then the control doesn't automatically re-scale the guage ticks. Instead I get the following sequence around the gauge:

1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6.

** Notice how everything has doubled up ***

If we look back to my original question where I had a RadialScale "Max" value of 12, the following sequence is presented on the scale:

1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12

** Notice that "6" is missing. Hence the needle offset **

Is there a way to fix it so that the guage knows to alter the required scale rather than doubling up or missing out numbers?

Thank you,

Rob