使用指标 自动显示出上升或者下降趋势线 主图指标 mt4指标类型：趋势指标 是否能用在mt4手机版上：否 是否含有未来函数：无 //+------------------------------------------------------------------+ //| at_Itp(t)Env.mq4 | //| at_Itp(t): Copyright ? 2005, MetaQuotes Software Corp. | //| http://www.metaquotes.net | //| Envelope: Copyright ? 2005, Nikolay Kositsin | //+------------------------------------------------------------------+ #property copyright "Copyright ? 2005, MetaQuotes Software Corp." #property link "http://www.metaquotes.net" //---- #property indicator_chart_window #property indicator_buffers 3 #property indicator_color1 Lime #property indicator_color2 Blue #property indicator_color3 Red //---- extern int hours=4; extern int s=10; extern int cb=1000; extern double Envelope_Shift=0.20; extern int Shift=0; double ci; double UperBuffer ; double DownBuffer ; //+------------------------------------------------------------------+ //| | //+------------------------------------------------------------------+ int init() { //---- drawing settings SetIndexStyle(0,DRAW_LINE); SetIndexStyle(1,DRAW_LINE); SetIndexStyle(2,DRAW_LINE); //---- IndexShift SetIndexShift(0,Shift); SetIndexShift(1,Shift); SetIndexShift(2,Shift); //---- IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)); //---- SetIndexLabel (0, "Envelope+"); SetIndexLabel (1, "at_Itp(t)"); SetIndexLabel (2, "Envelope-"); //---- indicator buffers IndicatorBuffers(3); //---- indicator buffers mapping SetIndexBuffer (0, UperBuffer); SetIndexBuffer (1, ci); SetIndexBuffer (2, DownBuffer); //---- return(0); } //+------------------------------------------------------------------+ //| | //+------------------------------------------------------------------+ int start() { // int counted_bars=IndicatorCounted(); int i,x,m,pt,aa,bb,cc; //---------------------------- pt=hours*60/Period(); //----------------------- for(m=0; m<=s; m++) { i=0; while(i<=cb) { if (m==0) { ci[cb+pt]=Close[cb+pt]; ci=Close; ci[cb+2*pt]=Close[cb+2*pt];} if (m!=0 & m!=s) { ci[i+pt]=0.5*(ci+ci[i+2*pt]); ci[0]=0.5*(ci[0]+ci[pt]); ci[cb+2*pt]=0.5*(ci[cb+2*pt]+ci[cb+pt]); } if (m==s) { aa=i; bb=i+pt; cc=i+2*pt; for(x=i; x<=i+pt-1; x++) {ci[x]=ci[aa]*((x-bb)*(x-cc))/((aa-bb)*(aa-cc))+ci[bb]*((x-aa)*(x-cc))/((bb-aa)*(bb-cc))+ci[cc]*((x-aa)*(x-bb))/((cc-aa)*(cc-bb));} } i=i+pt; } } //+------------------------------------------------------------------+ //| | //| Input indicator buffer: ci. | //| Output indicator buffers: UperBuffer, DownBuffer. | //+------------------------------------------------------------------+ | int ExtCountedBars=IndicatorCounted(); int r; r=Bars-ExtCountedBars-1; while(r>=0) { UperBuffer[r]= ci[r]*(1+Envelope_Shift/100); DownBuffer[r]= ci[r]/(1+Envelope_Shift/100); r--; } return(0); } //+------------------------------------------------------------------+at_Itp4_Env.jpg