Custom callouts on RadHtmlChart

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  1. Ted
    Ted avatar
    1 posts
    Member since:
    Mar 2013

    Posted 28 Mar 2013 Link to this post

    Is it possible to have a custom callout on a RadHtmlChart?  (See attached - "Mailer Sent" and "Website Launched")  The chart has three line series within it, using a date along the x-axis.  I tried adding a scatter series to put an individual point on the chart, but when I specified a date for the XValue, it gave me an error (problem converting to integer)

    Is this possible?  Is it a matter of mixing two different types of charts?  (lineseries and scatter)  How can I best accomplish this?

  2. Danail Vasilev
    Danail Vasilev avatar
    1502 posts

    Posted 01 Apr 2013 Link to this post

    Hi Ted,

    LineSeries uses a categorical XAxis, while the ScatterSeries and ScatterLineSeries use a numerical XAxis. The RadHtmlChart does not let you mix a Series of different types. You can have a look at this online demo related to mixing chart Series.

    Regarding the callouts, RadHtmlChart does not support such functionality. You can, however, achieve that effect by creating and aligning styled div/span elements that contain the desired text over the desired area from the RadHtmlChart. There is a good example on the KendoUI's Bubble chart demo, that show how to create a legend manually through such styled div element.

    All the best,
    Danail Vasilev
    the Telerik team
    If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed now.
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