Show negative & possitive values of Y axis in different colors. eg Green & Red

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2 posts, 0 answers
  1. Avi
    Avi avatar
    14 posts
    Member since:
    May 2009

    Posted 16 Jul 2009 Link to this post

    Hi,

        I wish to show negative and positive values on Y axis with different colors.

        If possible,i also wish to show the values on the series with different color.
        How can i do this.


    Thanks,
    Avi
  2. Dwight
    Admin
    Dwight avatar
    475 posts

    Posted 20 Jul 2009 Link to this post

    Hello Avi,

    Such functionality is not available out-of-the-box, but can be easily achieved.
    Here is a sample code of RadChart.BeforeLayout event handler:
    private void radChart1_BeforeLayout(object sender, EventArgs e) 
        foreach (ChartAxisItem item in this.radChart1.PlotArea.YAxis.Items) 
        { 
            if (item.Value < 0) 
                item.TextBlock.Appearance.TextProperties.Color = Color.Red; 
        } 
     
        foreach (ChartSeries series in this.radChart1.Series) 
            foreach (ChartSeriesItem item in series.Items) 
            { 
                if (item.YValue < 0) 
                    item.Label.TextBlock.Appearance.TextProperties.Color = Color.Red; 
            } 
     

    Note, that this code will change the colors of the labels that have negative values for both Y axis and all the series in the chart.

    Sincerely yours,
    Evtim
    the Telerik team

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