hysteresis
Hi
Hysteresis requires two levels and a memory but your code only has one level and no memory of the previous value.
indi should be a global variable so it retains its value between ticks and the code should contain two test
if(adx > 22 ) indi=1;
if(adx< 18 ) indi=0;
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Hi,
if you want to apply the principle of a thermostat, (switch on the heat if the temperature drops below a low level, switch off if temperature goes above a high level)
-it's called hysteresis- to avoid switching on and off multiple times in a row if the indicator is close to the threshold, how would you do it? Take a look at this example
with the ADX indicator and 22 as the high level and 18 as the low level: but here I want it to show 1 (for trend) and 0 (for no trend).
so:
adx - indi (should have this value)
17 - 0
18 - 0
19 - 0
20 - 0
21 - 0
22 - 1
23 - 1
22 - 1
21 - 1
20 - 1
19 - 1
18 - 1
17 - 0
// now in mql4 (iteration function of a custom indicator):
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
{
int limit;
double middle, upper, lower;
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--;
limit=Bars-counted_bars;
for(int i=0; i<limit; i++)
{
double iADX(NULL,0,14,PRICE_HIGH,MODE_MAIN,0) = ADX;
double indi;
//and then..
if (ADX[i]>22)
{
indi=1
}else
{
indi=0
}
}
//----
return(0);
}