//+------------------------------------------------------------------+
//| CrossedAlerts.mq4 |
//| Coders Guru |
//| Newdigital (just use the Codersguru code for JMA alert.
//| http://www.forex-tsd.com |
//+------------------------------------------------------------------+
#property copyright "Coders Guru"
#property link "http://www.forex-tsd.com"
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Lime
#property indicator_color2 Aqua
extern int Length_slow = 7;
extern int Length_fast = 5;
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- indicators
SetIndexStyle(0,DRAW_LINE);
SetIndexBuffer(0,ExtMapBuffer1);
SetIndexStyle(1,DRAW_LINE);
SetIndexBuffer(1,ExtMapBuffer2);
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----
//----
return(0);
}
bool Crossed (double line1 , double line2 )
{
static string last_direction = "";
string current_dirction = "";
if(line1>line2)current_dirction = "up";
if(line1<=line2)current_dirction = "down";
if(current_dirction != last_direction)
{
Alert("EMA Cross for "+Symbol()+" on the "+Period()+" minute chart.");
last_direction = current_dirction;
return (true);
}
else
{
return (false);
}
}
int start()
{
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--;
int pos=Bars-counted_bars;
while(pos>=0)
{
ExtMapBuffer1[pos]= iCustom(NULL,0,"JMA",Length_slow,0,1,pos);
ExtMapBuffer2[pos]= iCustom(NULL,0,"JMA",Length_fast,0,1,pos);
pos--;
}
Print(Crossed (ExtMapBuffer1[0],ExtMapBuffer2[0]));
//----
return(0);
}
//+------------------------------------------------------------------+
Sample
Analysis
Market Information Used:
Indicator Curves created:
Implements a curve of type DRAW_LINE
Indicators Used:
Custom Indicators Used:
JMA
Order Management characteristics:
Other Features:
It issuies visual alerts to the screen