CCompositeMembershipFunction

实施归属函数组合的类。

描述

归属函数组合是使用特定操作符的两种或以上归属函数的组合。

绘制图表的示例代码显示如下。

声明

   class CCompositeMembershipFuncion : public IMembershipFunction

主题

   #include <Math\Fuzzy\membershipfunction.mqh>
继承体系   CObject       IMembershipFunction           CCompositeMembershipFunction

类方法

类方法   描述
CompositionType 设置组合操作符。
MembershipFunctions 获取归属函数列表。
GetValue 通过指定自变数计算归属函数值。
方法继承自类 CObject Prev, Prev, Next, Next, Save, Load, Type, Compare

示例

//+------------------------------------------------------------------+

//|                                  CompositeMembershipFunction.mq5 |

//|                        Copyright 2016, MetaQuotes Software Corp. |

//|                                             https://www.mql5.com |

//+------------------------------------------------------------------+

#include <Math\Fuzzy\membershipfunction.mqh>

#include <Graphics\Graphic.mqh>

//--- 创建归属函数

CProductTwoSigmoidalMembershipFunctions func1(2,1,-1,7);

CP_ShapedMembershipFunction func2(0,6,7,9);

CCompositeMembershipFunction composite(ProdMF,GetPointer(func1),GetPointer(func2));

//--- 创建归属函数包装程序

double ProductTwoSigmoidalMembershipFunctions(double x) { return(func1.GetValue(x)); }

double P_ShapedMembershipFunction(double x) { return(func2.GetValue(x)); }

double CompositeMembershipFunction(double x) { return(composite.GetValue(x)); }

//+------------------------------------------------------------------+

//| 脚本程序起始函数                                                   |

//+------------------------------------------------------------------+

void OnStart()

  {

//--- 创建图形

   CGraphic graphic;

   if(!graphic.Create(0,"CompositeMembershipFunction",0,30,30,780,380))

     {

      graphic.Attach(0,"CompositeMembershipFunction");

     }

   graphic.HistoryNameWidth(70);

   graphic.BackgroundMain("CompositeMembershipFunction");

   graphic.BackgroundMainSize(16);

//--- 创建曲线

   graphic.CurveAdd(P_ShapedMembershipFunction,0.0,10.0,0.1,CURVE_LINES,"Func1");

   graphic.CurveAdd(ProductTwoSigmoidalMembershipFunctions,0.0,10.0,0.1,CURVE_LINES,"Func2");

   graphic.CurveAdd(CompositeMembershipFunction,0.0,10.0,0.1,CURVE_LINES,"Func1 * Func2");

//--- 设置X轴属性

   graphic.XAxis().AutoScale(false);

   graphic.XAxis().Min(0.0);

   graphic.XAxis().Max(10.0);

   graphic.XAxis().DefaultStep(1.0);

//--- 设置Y轴属性

   graphic.YAxis().AutoScale(false);

   graphic.YAxis().Min(0.0);

   graphic.YAxis().Max(1.1);

   graphic.YAxis().DefaultStep(0.2);

//--- 绘图

   graphic.CurvePlotAll();

   graphic.Update();

  }