how to invert a chart ?

anybody know how to display eur/usd chart inverted in metatrader ? like usd/eur ?

thanks.

There's no easy way to do that.

The only way to do it is to get a custom indicator written that creates an offline chart for USD/EUR.

I think that shouldn't be too difficult. You can use the code from the MT4 USD Index indicator and calculate EURUSD^-1, the inverse of EURUSD.

It took one minute to change the code from the US Dollar Index indicator.
By now, the indicator draws the inverted close price. If you want to have candle-stick charts instead, that's another story... A little more work, but not very difficult either.

Attached is a screenshot of the little script that I given in this post. If you have problems compiling and using it, let me know.

Modify the period converter to flip the price in there.

Okey, here is code.

How to do it?


//+------------------------------------------------------------------+
//| PeriodConverter.mq4 |
//| Copyright 2006-2014, MetaQuotes Software Corp. |
//| http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "2006-2014, MetaQuotes Software Corp."
#property link "http://www.mql4.com"
#property description "Period Converter to updated format of history base"
#property strict
#property show_inputs
#include <WinUser32.mqh>
input int InpPeriodMultiplier=3; // Period multiplier factor
int ExtHandle=-1;
//+------------------------------------------------------------------+
//| script program start function |
//+------------------------------------------------------------------+
void OnStart()
{
datetime time0;
ulong last_fpos=0;
long last_volume=0;
int i,start_pos,periodseconds;
int hwnd=0,cnt=0;
//---- History header
int file_version=401;
string c_copyright;
string c_symbol=Symbol();
int i_period=Period()*InpPeriodMultiplier;
int i_digits=Digits;
int i_unused[13];
MqlRates rate;
//---
ExtHandle=FileOpenHistory(c_symbol+(string)i_period+".hst",FILE_BIN|FILE_WRITE|FILE_SHARE_WRITE|FILE_SHARE_READ|FILE_ANSI);
if(ExtHandle<0)
return;
c_copyright="(C)opyright 2003, MetaQuotes Software Corp.";
ArrayInitialize(i_unused,0);
//--- write history file header
FileWriteInteger(ExtHandle,file_version,LONG_VALUE);
FileWriteString(ExtHandle,c_copyright,64);
FileWriteString(ExtHandle,c_symbol,12);
FileWriteInteger(ExtHandle,i_period,LONG_VALUE);
FileWriteInteger(ExtHandle,i_digits,LONG_VALUE);
FileWriteInteger(ExtHandle,0,LONG_VALUE);
FileWriteInteger(ExtHandle,0,LONG_VALUE);
FileWriteArray(ExtHandle,i_unused,0,13);
//--- write history file
periodseconds=i_period*60;
start_pos=Bars-1;
rate.open=Open[start_pos];
rate.low=Low[start_pos];
rate.high=High[start_pos];
rate.tick_volume=(long)Volume[start_pos];
rate.spread=0;
rate.real_volume=0;
//--- normalize open time
rate.time=Time[start_pos]/periodseconds;
rate.time*=periodseconds;
for(i=start_pos-1; i>=0; i--)
{
if(IsStopped())
break;
time0=Time[i];
//--- history may be updated
if(i==0)
{
//--- modify index if history was updated
if(RefreshRates())
i=iBarShift(NULL,0,time0);
}
//---
if(time0>=rate.time+periodseconds || i==0)
{
if(i==0 && time0<rate.time+periodseconds)
{
rate.tick_volume+=(long)Volume[0];
if(rate.low>Low[0])
rate.low=Low[0];
if(rate.high<High[0])
rate.high=High[0];
rate.close=Close[0];
}
last_fpos=FileTell(ExtHandle);
last_volume=(long)Volume[i];
FileWriteStruct(ExtHandle,rate);
cnt++;
if(time0>=rate.time+periodseconds)
{
rate.time=time0/periodseconds;
rate.time*=periodseconds;
rate.open=Open[i];
rate.low=Low[i];
rate.high=High[i];
rate.close=Close[i];
rate.tick_volume=last_volume;
}
}
else
{
rate.tick_volume+=(long)Volume[i];
if(rate.low>Low[i])
rate.low=Low[i];
if(rate.high<High[i])
rate.high=High[i];
rate.close=Close[i];
}
}
FileFlush(ExtHandle);
Print(cnt," record(s) written");
//--- collect incoming ticks
datetime last_time=LocalTime()-5;
while(!IsStopped())
{
datetime cur_time=LocalTime();
//--- check for new rates
if(RefreshRates())
{
time0=Time[0];
FileSeek(ExtHandle,last_fpos,SEEK_SET);
//--- is there current bar?
if(time0<rate.time+periodseconds)
{
rate.tick_volume+=(long)Volume[0]-last_volume;
last_volume=(long)Volume[0];
if(rate.low>Low[0])
rate.low=Low[0];
if(rate.high<High[0])
rate.high=High[0];
rate.close=Close[0];
}
else
{
//--- no, there is new bar
rate.tick_volume+=(long)Volume[1]-last_volume;
if(rate.low>Low[1])
rate.low=Low[1];
if(rate.high<High[1])
rate.high=High[1];
//--- write previous bar remains
FileWriteStruct(ExtHandle,rate);
last_fpos=FileTell(ExtHandle);
//----
rate.time=time0/periodseconds;
rate.time*=periodseconds;
rate.open=Open[0];
rate.low=Low[0];
rate.high=High[0];
rate.close=Close[0];
rate.tick_volume=(long)Volume[0];
last_volume=rate.tick_volume;
}
//----
FileWriteStruct(ExtHandle,rate);
FileFlush(ExtHandle);
//---
if(hwnd==0)
{
hwnd=WindowHandle(Symbol(),i_period);
if(hwnd!=0)
Print("Chart window detected");
}
//--- refresh window not frequently than 1 time in 2 seconds
if(hwnd!=0 && cur_time-last_time>=2)
{
PostMessageA(hwnd,WM_COMMAND,33324,0);
last_time=cur_time;
}
}
Sleep(50);
}
//---
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
//---
if(ExtHandle>=0)
{
FileClose(ExtHandle);
ExtHandle=-1;
}
//---
}
//+------------------------------------------------------------------+

found it, fantastico!

http://www.forexfactory.com/showthre...17#post7667217