WPF GRAPH DATASOUCE CUSTOM POINT STRUCT

[jiewei_li]

graph.DataSource= ChartCollection<PointI>

graph.plot=PointPlotRenderer

run error:

Could not find conversion from type PointI to type Double.

public struct PointI : IFormattable
{

public PointI(double x, double y)
{
X = x;
Y = y;
}

public double X { get; set; }

public double Y { get; set; }

public string ToString(string format, IFormatProvider formatProvider)
{
//throw new NotImplementedException();
return string.Format("{0},{1}", X, Y);
}
}

[phansen · Accepted solution]

To use a custom data type with the graph, you need to also implement a descriptor so the graph knows how to access your data. I have attached a descriptor from another question, translated to C# for your data type.

To use the descriptor, add a DataTypeDescriptor attribute to your custom type:

    [DataTypeDescriptor( typeof( PointIDescriptor ) )]
    public struct PointI : IFormattable {
        // ...
    }