LineSeries Empty Point Behavoir

17 posts, 0 answers
  1. Dana
    Dana avatar
    6 posts
    Member since:
    May 2011

    Posted 30 Jan 2012 Link to this post

    Is there a way of controlling the way empty [null] points are handled with ChartView?

    I was looking to move from RadChart to the ChartView in one of my applications mainly from a performance point of view
    [we are plotting c. 8000 points on each chart]

    As far as I can tell this behaves like the LinearSparkline in 'ShowAsZero' mode, ideally I need to show a gap.

    Thanks

    DN
  2. Peshito
    Admin
    Peshito avatar
    496 posts

    Posted 02 Feb 2012 Link to this post

    Hello,

    RadChartView currently supports empty values represented as null and displays them as zeroes, otherwise said we support currently only empty point behavior Zero from RadChart.

    We are planning to include the Drop and Gap modes from RadChart, unfortunately with the current implementation we use a single polyline segment to represent the series. We are aware of these issues and have planned the inclusion of EmptyPointBehavior, however, it will take some time to do it.

    Greetings,
    Peshito
    the Telerik team

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  4. Dana
    Dana avatar
    6 posts
    Member since:
    May 2011

    Posted 02 Feb 2012 Link to this post

    aah well, back to a normal radchart then :)

    Keep at it though guys, the new charts have real potential.
  5. AvgurD
    AvgurD avatar
    18 posts
    Member since:
    Oct 2012

    Posted 20 Feb 2012 Link to this post

    +1.
    I want to use the ChartView because it provide TrackBall behavior (Chart don't support it - am i right?), but i need the Gap behavior for null values in series. Its a strong recomendation for trends in industry application (like in SCADA-systems) - zero it's a normal value (for example - temperature. pressure, etc), but null is not.
    Can you say - for that time you can make this gap behavior to ChartView, approximately?

    PS Sorry for my terrible English.
  6. Petar Marchev
    Admin
    Petar Marchev avatar
    968 posts

    Posted 24 Feb 2012 Link to this post

    Hello Dmitry,

    We are planning to enhance the empty values behavior for Q2 2012 in about four months. As for trackball -- indeed RadChart does not support trackball info and there is no equivalent to it in RadChart.
      

    Kind regards,
    Petar Marchev
    the Telerik team
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  7. AvgurD
    AvgurD avatar
    18 posts
    Member since:
    Oct 2012

    Posted 28 Feb 2012 Link to this post

    And I hope in SL-version you will make it too, in Q2?
  8. Petar Marchev
    Admin
    Petar Marchev avatar
    968 posts

    Posted 02 Mar 2012 Link to this post

    Hello Dmitry,

    Yes, once ready, the empty values behavior will be available in both WPF and Silverlight.

    Greetings,
    Petar Marchev
    the Telerik team
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  9. Thomas
    Thomas avatar
    6 posts
    Member since:
    Jul 2010

    Posted 29 Mar 2012 Link to this post

    is it possible Empty point behavior in Telerik reporting series? please explain
  10. Evgenia
    Admin
    Evgenia avatar
    1406 posts

    Posted 02 Apr 2012 Link to this post

    Hello,

    Yes, the Empty Values feature is supported in our Reporting chart series. You can find information about it in our help topic.
    Let us know if you need any further assistance.

    Greetings,
    Evgenia
    the Telerik team
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  11. Thomas
    Thomas avatar
    6 posts
    Member since:
    Jul 2010

    Posted 04 Apr 2012 Link to this post

    Hello Evgenia,

    I want to bind my whole dataTable to chart and in that datatable some values is null. in reporting version 5.1.11.928 it is working as expected but in new release 2012 Q1 it is give me below error.

    "Cannot set Column <Columnname> to be null.Please Use DBNull instead."

    can you please help me for this?, or any suggestion from you.

    Thanks
  12. Evgenia
    Admin
    Evgenia avatar
    1406 posts

    Posted 09 Apr 2012 Link to this post

    Hi Thomas,

    Unfortunately the way our reporting chart currently works does not allow you to have an approximated values. The charting engine works with DBNull, but the reporting requires these values to be null. Unfortunately this is done internally and there is no way that you can workaround it.
    Depending on your exact scenario I can suggest that you set the null-s as 0-s or filter them using the Filters of the Chart item .

    It is in our future development plans to change this behavior but as for now I can't provide you an exact timeframe.

    Regards,
    Evgenia
    the Telerik team
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  13. Kinjal
    Kinjal avatar
    1 posts
    Member since:
    Aug 2014

    Posted 02 Jul 2015 in reply to Evgenia Link to this post

    Hello telerik Team

    i am having problem or issue with telerik Kendo UI Chart

    In Kendo UI WEB, the line chart is connected between the points without data. Instead, the line should be broken and restart with new markers and lines like we do in the WPF UI. is there any property like EmptyPointBehaviour.Gap in Telerik kendo UI for WEB for more understanding i attached file plz look forward

  14. Boyan Dimitrov
    Admin
    Boyan Dimitrov avatar
    1746 posts

    Posted 06 Jul 2015 Link to this post

    Hello,

    Similar behavior could be achieved using series.missingValues of Kendo UI Chart.  


    Regards,
    Boyan Dimitrov
    Telerik
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  15. Lisitsa
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    15 posts
    Member since:
    Apr 2014

    Posted 09 Jul 2015 in reply to Petar Marchev Link to this post

    3 years have passed, is this feature implemented now?
  16. Martin
    Admin
    Martin avatar
    1099 posts

    Posted 13 Jul 2015 Link to this post

    Hello Andrey,

    RadChartView for WPF supports empty data points. You can take a look at the Empty Values ChartView demo to see how to achieve the desired effect. Basically, you can set the value of the empty data point to Null. This way the chart won't draw it on the plot area.

    Regards,
    Martin
    Telerik
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  17. Lisitsa
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    15 posts
    Member since:
    Apr 2014

    Posted 17 Jul 2015 in reply to Martin Link to this post

    Hello Martin!

    I know that RadChartView supports empty data points, but I was asking about implementing this:

    We are planning to include the Drop and Gap modes from RadChart

    3 years have passed, and it's a huge time.

  18. Martin
    Admin
    Martin avatar
    1099 posts

    Posted 22 Jul 2015 Link to this post

    Hi Andrey,

    Currently, the empty points behavior is supported by the chartview suite, however, there is only a gap mode. In order to achieve the effect of the RadChart's Drop mode you can just set the empty values to 0.

    Regards,
    Martin
    Telerik
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