我是最近才学习写指标的 马上就遇到一个难题 先说明我写这个信号的功能吧 就是当RSI 离开超买/卖时就在 图表上标示出来 过程是对比前一支和后一支 bar 的值 本来是没有问题的 但当移动至前期的bar 时 mt4 会下载较旧的资料 编程上的问题马上出现了 它会重垒绘制前期和后期的信号指示 看一下图就明白了 :Q 我思索良久还是不能debug....... 请帮忙解救Snap2.pngSnap1.png

zoom out 再看一下........ 有多乱的.........Snap3.png

//+------------------------------------------------------------------+ //| rsi_test.mq4 | //| | //| | //+------------------------------------------------------------------+ #property copyright " " #property link "" #property indicator_chart_window #property indicator_buffers 2 #property indicator_color1 Black #property indicator_color2 Black //---- input parameters extern int buys=30; extern int sells=70; extern int periods=9; //---- buffers double ExtMapBuffer1; double ExtMapBuffer2; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int init() { //---- indicators SetIndexStyle(0,DRAW_ARROW,0,1); SetIndexArrow(0,234); SetIndexBuffer(0,ExtMapBuffer1); SetIndexEmptyValue(0,0.0); SetIndexStyle(1,DRAW_ARROW,0,1); SetIndexArrow(1,233); SetIndexBuffer(1,ExtMapBuffer2); SetIndexEmptyValue(1,0.0); //---- return(0); } //+------------------------------------------------------------------+ //| Custor indicator deinitialization function | //+------------------------------------------------------------------+ int deinit() { //---- //---- return(0); } //+------------------------------------------------------------------+ //| Custom indicator iteration function | //+------------------------------------------------------------------+ int start() { int limit; int counted_bars=IndicatorCounted(); //---- check for possible errors if(counted_bars<0) return(-1); //---- last counted bar will be recounted if(counted_bars>0) counted_bars--; limit=Bars-counted_bars; for(int i=0; isells){ //sell signal if(iRSI(NULL,0,periods,PRICE_CLOSE,i-1)iRSI(NULL,0,periods,PRICE_CLOSE,i) && iRSI(NULL,0,periods,PRICE_CLOSE,i-1)>buys && iRSI(NULL,0,periods,PRICE_CLOSE,i-2)>buys && iRSI(NULL,0,periods,PRICE_CLOSE,i-1) !=0){ ExtMapBuffer2=Low-3*Point; } } } //---- return(0); } //+------------------------------------------------------------------+

你没有清空这样当新的历史数据过来时候就会和以前的数据重叠从而出现那种情况, 修正该问题后的代码如下: //+------------------------------------------------------------------+ //| rsi_test.mq4 | //| | //| | //+------------------------------------------------------------------+ #property copyright " " #property link "" #property indicator_chart_window #property indicator_buffers 2 #property indicator_color1 Red #property indicator_color2 Blue //---- input parameters extern int buys=30; extern int sells=70; extern int periods=9; //---- buffers double ExtMapBuffer1; double ExtMapBuffer2; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int init() { //---- indicators SetIndexStyle(0,DRAW_ARROW,0,1); SetIndexArrow(0,234); SetIndexBuffer(0,ExtMapBuffer1); SetIndexEmptyValue(0,0.0); SetIndexStyle(1,DRAW_ARROW,0,1); SetIndexArrow(1,233); SetIndexBuffer(1,ExtMapBuffer2); SetIndexEmptyValue(1,0.0); //---- return(0); } //+------------------------------------------------------------------+ //| Custor indicator deinitialization function | //+------------------------------------------------------------------+ int deinit() { //---- //---- return(0); } //+------------------------------------------------------------------+ //| Custom indicator iteration function | //+------------------------------------------------------------------+ int start() { int pos; if (Bars < periods) return (0); int counted_bars=IndicatorCounted(); //---- check for possible errors if(counted_bars<0) return(-1); //---- last counted bar will be recounted if(counted_bars>0) counted_bars--; pos=Bars-counted_bars-1; int i; //---- zero initial values if(counted_bars<1) { for(i=1;i=2; i--){ rsi0 = iRSI(NULL,0,periods,PRICE_CLOSE,i); rsi1 = iRSI(NULL,0,periods,PRICE_CLOSE,i-1); rsi2 = iRSI(NULL,0,periods,PRICE_CLOSE,i-2); if(rsi0 > sells && rsi1 < rsi0 && rsi1 < sells && rsi2 < sells && rsi1 != 0) { //sell signal ExtMapBuffer1=High+3*Point; } else { ExtMapBuffer1=0; } if(rsi0 < buys && rsi1 > rsi0 && rsi1 > buys && rsi2 > buys && rsi1 !=0){ //buy signal ExtMapBuffer2=Low-3*Point; } else { ExtMapBuffer2=0; } } //---- return(0); } //+------------------------------------------------------------------+

:) 谢谢 , 先去研究一下

韬客还有这样的技术专家啊？

藏龙卧虎！