RADChart Exception - "Impossible to show correct data, when difference between minimal and maximal values of series items less than 1E-14."

[LJ]

Hi All,

I have a custom web part which includes RAD Chart control.
This web part is used in WSS 3.0.

SharePoint List data is displayed in RAD Chart.

I added series to RAD Chart.

I get the Series' max , min value and calculates the difference between them.

double seriesMaxYVal  = radChartObj.Series.GetMaxYValue();
double seriesMinYVal  = radChartObj.Series.GetMinYValue();
double diffSeriesYVal = seriesMaxYVal - seriesMinYVal;

I checked for difference between series' max and min value and set the IsLogarithmic property of Y-axis as true.

Please refer the below code:

                // Check if difference between series item Max and Min values is zero.
                if (diffSeriesYVal != 0)
                {
                    // Check if difference between series item Max and Min values is more or less than specific values.
                    // If difference is out of valid range then set RadChart's Y-Axis logarithmic mode as true.
                    // This is used to display rapidly increasing values.
                    if ((diffSeriesYVal >= 1E+14) || (diffSeriesYVal <= 1E-14))
                    {
                        radChartObj.PlotArea.YAxis.IsLogarithmic = true;
                    }
                }
                else if ((seriesMaxYVal >= 1E+14) || (seriesMaxYVal != 0 && seriesMaxYVal <= 1E-14))
                {
                    radChartObj.PlotArea.YAxis.IsLogarithmic = true;
                }

As per the above code, I set the IsLogarthimic property value as true whenever it is required.

Case
=====

Series max Y value = 1.50000000000001E+28
Series min Y value = 1.5E+28
Difference between max and min value = 98956046499840.0

In case of above values, no condition is satisfied and thats why IsLogarithmic property value is set as false.
and RenderContents function is throwing exception.

Exception: 
"Impossible to show correct data, when difference between minimal and maximal values of series items less than 1E-14."

Stack Trace: 
"   at Telerik.Charting.Chart.GetException(RenderEngine renderEngine, Exception ex)\r\n   at Telerik.Charting.Chart.GetImage(Int32 width, Int32 height)\r\n   at Telerik.Web.UI.RadChart.RenderClassic(HtmlTextWriter writer)\r\n   at Telerik.Web.UI.RadChart.RenderContents(HtmlTextWriter writer)\r\n   at System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer)\r\n   at Telerik.Web.UI.RadDataBoundControl.Render(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)\r\n   at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)\r\n   at System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer)\r\n   at System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)\r\n   at Telerik.Web.UI.RadAjaxPanel.RenderChildren(HtmlTextWriter writer)\r\n   at System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer)\r\n   at Telerik.Web.UI.RadAjaxPanel.RenderContents(HtmlTextWriter writer)\r\n   at System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer)\r\n   at Telerik.Web.UI.RadAjaxPanel.Render(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)\r\n   at Telerik.Web.UI.ControlRenderer.Render(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)\r\n   at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.Render(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)\r\n   at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)\r\n   at System.Web.UI.UpdatePanel.RenderChildren(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.Render(HtmlTextWriter writer)\r\n   at System.Web.UI.UpdatePanel.Render(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)\r\n   at Telerik.Web.UI.PreControlToAjaxify.Render(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)\r\n   at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)\r\n   at System.Web.UI.WebControls.TableCell.RenderContents(HtmlTextWriter writer)\r\n   at System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)\r\n   at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)\r\n   at System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer)\r\n   at System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)\r\n   at System.Web.UI.WebControls.Table.RenderContents(HtmlTextWriter writer)\r\n   at System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)\r\n   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)\r\n   at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)\r\n   at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)\r\n   at System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer)\r\n   at Documenta.SharePoint.Reports.ReportWebPart.ChartViewer.RenderContents(HtmlTextWriter writer) in D:\\LatestDocumenta\\Source\\Documenta.SharePoint.Reports\\src\\ChartViewer.cs:line 368"



Please let me know the limits of difference values between series max and min values in RADChart.

Please suggest a solution.

Thanking you in anticipation.

Regards,
LJ

 

[Ves]

Hi LJ,

Can you please provide more details? Our local tests do not seem to reproduce the issue in the case you described.

Sincerely,
Ves
the Telerik team

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[LJ]

Hi Ves,

Thanks for your response.

For this issue, I opened the support ticket [269051] which includes the small working project.

Please look in to the same and suggest me a solution.

Thanks & Regards,
LJ