金融证券系统

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Support and Resistance.afl：源码内容

							//------------------------------------------------------------------------------
//
//  Formula Name:    Support and Resistance
//  Author/Uploader: Prakash Shenoi 
//  E-mail:          
//  Date/Time Added: 2006-09-19 11:06:24
//  Origin:          
//  Keywords:        Support and Resistance
//  Level:           basic
//  Flags:           indicator
//  Formula URL:     http://www.amibroker.com/library/formula.php?id=712
//  Details URL:     http://www.amibroker.com/library/detail.php?id=712
//
//------------------------------------------------------------------------------
//
//  Simple support and resistance indicator with lookback variable input.
//
//------------------------------------------------------------------------------
/* SUPPORT AND RESISTANCE */
/* AFL Code - Prakash Shenoi */
LB= Param("Look Back Periods",10,1,30,1);
R=ValueWhen(Cross(MA(C,LB),C),HHV(H,LB),1);
S=ValueWhen(Cross(C,MA(C,LB)),LLV(L,LB),1);
Color=IIf(O>C,colorBlack,colorYellow);
Plot (R,"Resz",22,8+16);
Plot (s,"Supp",19,8+16);
Plot (C,"Close",color,64,32);
GraphXSpace=4;

						