Microsoft Charting Histogram Zero With Line
- by Brownman98
I am currently developing an application that uses chart control to create a histogram. The histogram displays data correctly however I would like to center the data. Right now the Min and Max are automatically set. I would like the graph to always force its to be displayed symmetrically.
Here is an example of what I'm trying to accomplish.
Basically I would like it to look like a normal distribution graph. Does anyone know how I can do the the following:
Get the graph to be displayed symmetrically?
Always show a zero line.
Here is the aspx markup.
<asp:Chart ID="ChartHistogram" runat="server" Height="200" Width="300">
<Series>
<asp:Series Name="SeriesDataHistogram" ChartType="RangeColumn" Color="#4d5b6e" BorderColor="#ffffff" BorderDashStyle="NotSet">
</asp:Series>
</Series>
<ChartAreas>
<asp:ChartArea Name="ChartAreaMain" BorderColor="#CCCCCC">
<AxisX TitleFont="Arial, 7pt" LabelAutoFitMaxFontSize="7">
<MajorGrid LineColor="#FFFFFF" Interval="5" />
<LabelStyle Format="P1" />
</AxisX>
<AxisY Title="Frequency" TitleFont="Arial, 7pt" LabelAutoFitMaxFontSize="7">
<MajorGrid LineColor="#FFFFFF" />
</AxisY>
</asp:ChartArea>
</ChartAreas>
</asp:Chart>
Here is the code behind
private void DrawHistogram(List<ReturnDataObject> list)
{
foreach (ReturnDataObject r in list)
this.ChartHistogram.Series["SeriesDataHistogram"].Points.AddY(r.ReturnAmount);
// HistogramChartHelper is a helper class found in the samples Utilities folder.
HistogramChartHelper histogramHelper = new HistogramChartHelper();
// Show the percent frequency on the right Y axis.
histogramHelper.ShowPercentOnSecondaryYAxis = false;
// Create histogram series
histogramHelper.CreateHistogram(ChartHistogram, "SeriesDataHistogram", "Histogram");
}
Thanks for any help.
