Is there way to add data trigger to XamChart, when value = 0, marker will become invisible or use transparent fill. Label will still be displayed.
Thanks!
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<Style x:Key="NoLabelMarker" TargetType="{x:Type igCA:Marker}"> <Setter Property="Fill" Value="Black"/> <Setter Property="Stroke" Value="Black"/> <Setter Property="MarkerSize" Value=".5"/> <Setter Property="Foreground" Value="Transparent"/> </Style>
<igCA:XamChart Name="ColumnChart2D" Style="{StaticResource XamChartStyle}" Grid.Row="1" > <igCA:XamChart.Legend> <igCA:Legend Visible="False"/> </igCA:XamChart.Legend>
<!-- Data points --> <igCA:XamChart.Series>
<igCA:Series Label="Goal" x:Name="goalSeries" ChartType="line" StrokeThickness="0" Fill="#FFD70005"> <igCA:Series.DataPoints> <igCA:DataPoint Value="0" Label="A1"/> <igCA:DataPoint Value="0.8" Label="A2"/> <igCA:DataPoint Value="0.85" Label="A3"/> <igCA:DataPoint Value="0.95" Label="A4"/> <igCA:DataPoint Value="1.0" Label="A5"/> </igCA:Series.DataPoints> <igCA:Series.Marker> <igCA:Marker Style="{StaticResource NoLabelMarker}"/> </igCA:Series.Marker></igCA:Series>
</igCA:XamChart>
Hello,
Thank you for your post. I have been looking into it and the code you have provided and I created a sample project with the functionality you want, but the visibility of the Markers is set only when the Data is loaded after that if you change the DataPoint’s Values, the marker won’t appear or disappear, because I handled its loaded event since I believe the thing you want to achieve cannot be done by a Trigger. Please let me know if this helps you or you need further assistance on this matter.
Looking forward for your reply.
It worked! Thank you very much!
Hello Lily,
I am glad I helped you. As for the Marker’s Value you can set the Marker’s Format Property to “ “ (empty space) in order to achieve your goal. Please let me know if this helps you or you need further assistance on this matter.
i added Format = "", the value of datapoint is still being displayed:
<igCA:Series.Marker> <igCA:Marker UseDataTemplate="True" DataTemplate="{StaticResource dt}" Format=""/> </igCA:Series.Marker>
Thanks again for your help!
Hello again,
There should be space between quote like this Format =" ".
Hope this helps you.
that did the trick. Thank you!!!
Thank you for your feedback. I am glad that you resolved your issue and I believe that other community members may benefit from this as well.
Thanks again.
Thanks a lot!! it works!
You should set it to "DontPlot" in order not to plot the null datapoints.
Thanks a lot for the hint. I am using the xamDataChart for the line series. I can see the property you mentioned for the series. Can you also tell me what is that I need to set the property to inorder to have the line series end at the point prior to it and start again at the point next to it.
It has been a while since you have made your post, in case you still need support I will be glad to assist you further. I suppose the other community members can benefit from this answer as well. I have been looking into your post and I created a sample project for you with the functionality you want. Basically I used XamDataChart instead of XamChart, where the thing you want is built in and you can chose how the Chart will treat the null values by setting Series’ UnknownValuePlotting Property.
Feel free to write me if you have further questions.
Is there a way to plot an empty point in the line series. By empty point, I mean the line joining the points should have a break at a data point if there is no value for that.