看了《布林线》，II%是指当日交易密度，指标可参考如下，但是21日我没怎么搞懂， 是不是求21日的平均？你知道的话，可以用中文说明，然后我帮你编。 //+------------------------------------------------------------------+ //| II%.mq4 | //| Copyright ?2004, MetaQuotes Software Corp. | //| http://www.metaquotes.net | //+------------------------------------------------------------------+ #property copyright "Copyright ?2004, MetaQuotes Software Corp." #property link "http://www.metaquotes.net" #property indicator_separate_window //#property indicator_minimum -1 //#property indicator_maximum 2 //#property indicator_level3 10 //#property indicator_level4 30 #property indicator_level5 0 #property indicator_buffers 1 //---- input parameters //---- buffers double ExtMapBuffer1; double ExtMapBuffer2; double ExtMapBuffer3; double ExtMapBuffer4; double ExtMapBuffer5; double ExtMapBuffer6; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int init() { IndicatorBuffers(8); //---- 1 additional buffers are used for counting. //---- indicators SetIndexStyle(0,DRAW_LINE); SetIndexBuffer(0,ExtMapBuffer1); //---- return(0); } //+------------------------------------------------------------------+ //| Custor indicator deinitialization function | //+------------------------------------------------------------------+ int deinit() { //---- TODO: add your code here //---- indicator buffers mapping //if(!SetIndexBuffer(0,ExtMapBuffer1) && !SetIndexBuffer(1,ExtMapBuffer2)) // Print("cannot set indicator buffers!"); //---- name for DataWindow and indicator subwindow label IndicatorShortName("II%"); //---- return(0); } //+------------------------------------------------------------------+ //| Custom indicator iteration function | //+------------------------------------------------------------------+ int start() { int counted_bars=IndicatorCounted(); //---- TODO: add your code here int limit; //---- 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; i