Vielen Danke erstmal für die Idee mit dem object counter. das hat funktioniert. Nun bin ich auf ein anderes Problem gestossen. Und zwar rechnet der Indikator alle im Chart vorhandenen Bars. D.h. man bekommt hunderte linen. Wie könnte man das abändern, das er vielleicht nur die letzen 500 bars einbezieht um Highs and Lows zu bestimmen?
PHP-Code:
#property version "1.00"
#property strict
#property indicator_chart_window
extern int periode_to_next_extremum = 20;
int bars_to_check = 40;
double ResLevel[], SupLevel[];
datetime ResTime[],SupTime[];
int objectcounter = 1;
string NameRES = "line";
string TextRES = "RES";
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int OnInit()
{
ArrayResize(ResLevel,1);
ArrayResize(ResTime,2);
//--- indicator buffers mapping
//---
return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
const int prev_calculated,
const datetime &time[],
const double &open[],
const double &high[],
const double &low[],
const double &close[],
const long &tick_volume[],
const long &volume[],
const int &spread[])
{
//---
int limit;
int counted_bars = IndicatorCounted();
//---- check for possible errors
if(counted_bars<0) return(-1);
limit=Bars - counted_bars;
//---- main loop
for(int i = 1; i < limit; i++)
{
//Resistance
if(iHighest(NULL,0,MODE_HIGH,bars_to_check,i) == i + periode_to_next_extremum)
{
ResLevel[0] = High[i + periode_to_next_extremum];
ResTime[0] = Time[i + periode_to_next_extremum];
ResTime[1] = Time[i + periode_to_next_extremum] + 9999999;
objectcounter++;
if(!ObjectCreate(NameRES + (string)objectcounter,OBJ_TREND,0,ResTime[0],ResLevel[0],ResTime[1],ResLevel[0]))
{
Print("There must be sth wrong Trend: ", GetLastError());
}
else Print("Trend has been drawn: ",NameRES + (string)objectcounter);
if(!ObjectCreate(TextRES + (string)objectcounter,OBJ_TEXT,0,ResTime[0],ResLevel[0]))
{
Print("There must be sth wrong Text: ", GetLastError());
}
if(!ObjectSetText(TextRES + (string)objectcounter,TextRES + (string)objectcounter,10,"Times New Roman", Red))
{
Print("There must be sth wrong Change Text: ", GetLastError());
}
}
//Support
}
//--- return value of prev_calculated for next call
return(rates_total);
}
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
int number_of_objects_deleted = ObjectsDeleteAll(0,"",0,-1);
Print("number_of_objects-deleted = ", number_of_objects_deleted);
}