ChartCalculatedFieldCollection Class
In This Article
A collection that stores calculated fields.
Namespace: DevExpress.Xpf.Charts
Assembly: DevExpress.Xpf.Charts.v24.2.dll
NuGet Package: DevExpress.Wpf.Charts
#Declaration
public class ChartCalculatedFieldCollection :
ChartElementCollection<ChartCalculatedField>,
IEnumerable<ICalculatedField>,
IEnumerable
#Related API Members
The following members return ChartCalculatedFieldCollection objects:
#Remarks
The ChartCalculatedFieldCollection is a collection of the ChartCalculatedField objects.
#Example
The following example shows how to create a calculated field and then use this field as a data source for a series. The field’s values are calculated by the following expression: [Time.Seconds] * [Velocity].
using System;
using System.Collections.Generic;
using System.Windows;
namespace CalculatedFields {
public class ChartViewModel {
List<DataPoint> dataPoints;
public List<DataPoint> DataPoints {
get {
if (dataPoints == null) {
dataPoints = new List<DataPoint> {
new DataPoint (new TimeSpan(0, 0, 0), 10),
new DataPoint (new TimeSpan(0, 0, 1), 11.46),
new DataPoint (new TimeSpan(0, 0, 2), 11.90),
new DataPoint (new TimeSpan(0, 0, 3), 12.1),
new DataPoint (new TimeSpan(0, 0, 4), 12.236),
new DataPoint (new TimeSpan(0, 0, 5), 12.325),
new DataPoint (new TimeSpan(0, 0, 6), 12.625),
new DataPoint (new TimeSpan(0, 0, 7), 13.896),
new DataPoint (new TimeSpan(0, 0, 8), 14.123),
new DataPoint (new TimeSpan(0, 0, 9), 14.623),
new DataPoint (new TimeSpan(0, 0, 10), 15.007),
new DataPoint (new TimeSpan(0, 0, 11), 15.452),
new DataPoint (new TimeSpan(0, 0, 12), 15.756)
};
}
return dataPoints;
}
}
}
public class DataPoint {
public TimeSpan Time { get; set; }
public double Velocity { get; set; }
public DataPoint(TimeSpan time, double velocity) {
this.Time = time;
this.Velocity = velocity;
}
}
}
#Inheritance
See Also