I have been struggling with this from about 2 weeks now. I have a dynamic data set that depending on how the database is queried I will have 1 to n number of groups. Next I take the data and based on the number of buckets (columns) I catagorize the data into each bucket, then within the buckets by group. For the life of me I cannot ge the data the aligned such that the chart displays it.

I am using a CategoryXAxis, NumericYAxis, StackedColumnSeries and then multiple StackedFragmentSeries for each group. my data structure looks like this:

public class HistogramData

{

   public string sGroup {get; set;}

   public double dCount {get; set;}

    public HistogramData()

    {

        sGroup = "";

        dCount = 0;

    }

}

public class HistogramBuckets

{

    public string sBucket {get; set;}

    public ObservableCollection<HistogramData> ocData { get; set; }

    public HistogramBuckets()

    {

        sBucket = "";

        ocData = new ObservableCollection<HistogramData>();

    }

}

This is in my ViewModel

ObservableCollection<HistogramBuckets> _ocData;

public ObservableCollection<HistogramBuckets> ocData

 {

     get

            {

       return _ocData;

            }

      set

            {

         if (value != _ocData)

                {

                    _ocData =value;

                    NotifyPropertyChanged(m => m.ocData);

                }

            }

}

Then to populate this structure I have one loop to create the number of buckets (columns) and then a loop inside to create the groups within the buckets. I figured I could use the sBucket as my category for the X-Axis and then use the sGroups for each fragement using the dCount for the Y-Axis. What am I missing?

I am using the SL5 V12.1 NetAdvanage, in VS 2010.