Problem: Calculate an Adaptive Detrender Price
Oscillator, an adaptive version of a common indicator defined
to be the difference between a moving average and the same moving
avg. "centered" at half the avg. length.
Here is how you accomplish this in Metastock with ASI:
{For the periods we
use Ehler's Cycle Period measurement, this could be ANY function,
or simply a constant}
period := ExtFml("ADSI.CyclePeriod", MP(), .18,
0.05, 1.1);
avg := ExtFml("ASI.SMA",
MP(), period);
detrender := ExtFml("ASI.Ref", avg, period / 2 +
1);
DetrendPriceOsc := avg - detrender;
DetrendPriceOsc;
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