■ Line 클래스의 Function 속성을 사용해 커스텀 함수를 설정하는 방법을 보여준다.
▶ 예제 코드 (C#)
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using System; using Steema.TeeChart; using Steema.TeeChart.Styles; /// <summary> /// 제곱근 합계 /// </summary> public class SquareRootSummary : Function { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - SquareRootSummary() /// <summary> /// 생성자 /// </summary> public SquareRootSummary(): base() { } #endregion #region 생성자 - SquareRootSummary(innerChart) /// <summary> /// 생성자 /// </summary> /// <param name="innerChart">내부 Chart</param> public SquareRootSummary(Chart innerChart) : base(innerChart) { } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 계산하기 - Calculate(sourceSeries, firstIndex, lastIndex) /// <summary> /// 계산하기 /// </summary> /// <param name="sourceSeries">소스 시리즈</param> /// <param name="firstIndex">첫번째 인덱스</param> /// <param name="lastIndex">마지막 인덱스</param> /// <returns>계산 값</returns> public override double Calculate(Series sourceSeries, int firstIndex, int lastIndex) { ValueList valueList = ValueList(sourceSeries); if(firstIndex == -1) { double result = 0d; for(int i = 0; i < sourceSeries.Count; i++) { result += Math.Sqrt(valueList[i]); } return result; } else { double result = 0d; for(int i = firstIndex; i <= lastIndex; i++) { result += Math.Sqrt(valueList[i]); } return result; } } #endregion #region 다수 계산하기 - CalculateMany(sourceSeriesArrayList, valueIndex) /// <summary> /// 다수 계산하기 /// </summary> /// <param name="sourceSeriesArrayList">소스 시리즈 배열 리스트</param> /// <param name="valueIndex">값 인덱스</param> /// <returns>계산 값</returns> public override double CalculateMany(ArrayList sourceSeriesArrayList, int valueIndex) { ValueList valueList = null; double result = 0d; for(int i = 0; i < sourceSeriesArrayList.Count; i++) { valueList = ValueList(sourceSeriesArrayList[i] as Series); if(valueList.Count > valueIndex) { result += Math.Sqrt(valueList[valueIndex]); } } return result; } #endregion } ... #region 차트를 생성한다. TChart chart = new TChart(); chart.Aspect.View3D = false; #endregion #region 막대 시리즈를 생성한다. Bar bar = new Bar(); bar.FillSampleValues(); chart.Series.Add(bar); #endregion #region 커스텀 함수를 생성한다. SquareRootSummary squareSummary = new SquareRootSummary(); #endregion #region 라인 시리즈를 생성한다. Line line = new Line(); line.LinePen.Width = 3; line.DataSource = bar; line.Function = squareSummary; line.Color = Color.Red; line.CheckDataSource(); chart.Series.Add(line); #endregion |