slowkd
//+------------------------------------------------------------------+
//| KDJ.mq4 |
//| Copyright ?2005, MetaQuotes Software Corp. |
//| [url]http://www.metaquotes.net[/url] |
//+------------------------------------------------------------------+
#property copyright "Copyright ?2005, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net"
#property indicator_separate_window
#property indicator_buffers 4
#property indicator_color1 Black
#property indicator_color2 Silver
#property indicator_color3 Yellow
#property indicator_color4 Magenta
//---- input parameters
extern int KPeriod=9;
extern int DPeriod=3;
extern int JPeriod=3;
double ind_buffer1[];
double ind_buffer2[];
double ind_buffer3[];
double ind_buffer4[];
double HighesBuffer[];
double LowesBuffer[];
int draw_begin1=0;
int draw_begin2=0;
//+------------------------------------------------------------------+
//| expert initialization function |
//+------------------------------------------------------------------+
int init()
{
string short_name;
//---- 2 additional buffers are used for counting.
IndicatorBuffers(6);
SetIndexBuffer(0, ind_buffer1);
SetIndexBuffer(1, ind_buffer2);
SetIndexBuffer(2, ind_buffer3);
SetIndexBuffer(3, ind_buffer4);
SetIndexBuffer(4, HighesBuffer);
SetIndexBuffer(5, LowesBuffer);
//---- indicator lines
SetIndexStyle(1,DRAW_LINE);
SetIndexBuffer(1, ind_buffer2);
SetIndexStyle(2,DRAW_LINE);
SetIndexBuffer(2, ind_buffer3);
SetIndexStyle(3,DRAW_LINE);
SetIndexBuffer(3, ind_buffer4);
//---- name for DataWindow and indicator subwindow label
IndicatorShortName("KDJ("+KPeriod+","+DPeriod+","+JPeriod+")");
SetIndexLabel(0,NULL);
SetIndexLabel(1,"K");
SetIndexLabel(2,"D");
SetIndexLabel(3,"J");
//----
draw_begin1=KPeriod+JPeriod;
draw_begin2=draw_begin1+DPeriod;
SetIndexDrawBegin(0,draw_begin1);
SetIndexDrawBegin(1,draw_begin2);
return(0);
}
//+------------------------------------------------------------------+
//| expert deinitialization function |
//+------------------------------------------------------------------+
int start()
{
int i,k;
int counted_bars=IndicatorCounted();
double price;
//----
if(Bars<=draw_begin2) return(0);
//---- initial zero
if(counted_bars<1)
{
for(i=1;i<=draw_begin1;i++) ind_buffer1[Bars-i]=0;
for(i=1;i<=draw_begin2;i++) ind_buffer2[Bars-i]=0;
}
//---- minimums counting
i=Bars-KPeriod;
if(counted_bars>KPeriod) i=Bars-counted_bars-1;
while(i>=0)
{
double min=1000000;
k=i+KPeriod-1;
while(k>=i)
{
price=Low[k];
if(min>price) min=price;
k--;
}
LowesBuffer[i]=min;
i--;
}
//---- maximums counting
i=Bars-KPeriod;
if(counted_bars>KPeriod) i=Bars-counted_bars-1;
while(i>=0)
{
double max=-1000000;
k=i+KPeriod-1;
while(k>=i)
{
price=High[k];
if(max<price) max=price;
k--;
}
HighesBuffer[i]=max;
i--;
}
//---- %K line
i=Bars-draw_begin1;
if(counted_bars>draw_begin1) i=Bars-counted_bars-1;
while(i>=0)
{
double sumlow=0.0;
double sumhigh=0.0;
for(k=(i+JPeriod-1);k>=i;k--)
{
sumlow+=Close[k]-LowesBuffer[k];
sumhigh+=HighesBuffer[k]-LowesBuffer[k];
}
if(sumhigh==0.0) ind_buffer1[i]=100.0;
else ind_buffer1[i]=sumlow/sumhigh*100;
i--;
}
//---- last counted bar will be recounted
if(counted_bars>0) counted_bars--;
int limit=Bars-counted_bars;
//---- signal line is simple movimg average
for(i=0; i<limit; i++)
ind_buffer2[i]=iMAOnArray(ind_buffer1,Bars,DPeriod,0,MODE_SMA,i);
for(i=0; i<limit; i++)
ind_buffer3[i]=iMAOnArray(ind_buffer2,Bars,JPeriod,0,MODE_SMA,i);
for(i=0; i<limit; i++)
ind_buffer4[i]=3*ind_buffer2[i]-2*ind_buffer3[i];
//----
return(0);
}
//+------------------------------------------------------------------+
[[i] 本帖最后由 渔弋 于 2008-2-20 23:34 编辑 [/i]]
