和布林带类似的带状的， 就是下图中外侧的是布林带，里面点的就是Keltner Channel 或则在其他软件里有 谢谢回答3.jpg

//+------------------------------------------------------------------+ //| Keltner Channels.mq4 | //| Coded by Gilani | //| Copyright ?2005, MetaQuotes Software Corp. | //| http://www.metaquotes.net | //+------------------------------------------------------------------+ #property copyright "Copyright ?2005, MetaQuotes Software Corp." #property link "http://www.metaquotes.net" //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ #property indicator_chart_window #property indicator_buffers 3 #property indicator_color1 White #property indicator_color2 White #property indicator_color3 White double upper, middle, lower; extern int period = 10; int init() { SetIndexStyle(0,DRAW_LINE); SetIndexShift(0,0); SetIndexDrawBegin(0,0); SetIndexBuffer(0,upper); SetIndexStyle(1,DRAW_LINE); SetIndexShift(1,0); SetIndexDrawBegin(1,0); SetIndexBuffer(1,middle); SetIndexStyle(2,DRAW_LINE); SetIndexShift(2,0); SetIndexDrawBegin(2,0); SetIndexBuffer(2,lower); //---- indicators //---- return(0); } //+------------------------------------------------------------------+ //| Custor indicator deinitialization function | //+------------------------------------------------------------------+ int deinit() { //---- TODO: add your code here //---- return(0); } //+------------------------------------------------------------------+ //| Custom indicator iteration function | //+------------------------------------------------------------------+ int start() { int limit; int counted_bars=IndicatorCounted(); if(counted_bars<0) return(-1); if(counted_bars>0) counted_bars--; limit=Bars-counted_bars; double avg; for(int x=0; x