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dave if you want an EMA with varperiod download indicators.dll and
use scEMA(array, varperiod)
stephane
wrote:
> I need a poke in the head...
>
> I wanted a version of the MACD histogram that can take arrays for
its three
> parameters. I used the array-capable version of EMA provided by
tomasz, but
> I'm not getting the same results as with the native EMA function,
even with
> static numbers as parameters. (I said I was doing this to use
arrays, but
> since even static numbers don't work right, I used them here for
> simplicity.) oddly enough, the results are the same using tomasz's
EMAx the
> first two times, but using it the third time causes a difference.
that's the
> one marked with '<<< HERE <<<' below.
>
> what's wrong with this picture?
>
> here's the code:
>
> -----------------
> function EMAx(array, period) { // use for EMA when period is an
array
> return AMA(array, 2 / (period + 1));
> }
>
> function MACDHistogram() {
> if(using_arrays) {
> m = EMAx(c, 12) - EMAx(c, 26);// MACD line
> s = m - EMAx(m, 9); // signal line;
<<< HERE <<<
> } else {
> m = EMA(c, 12) - EMA(c, 26);
> s = m - EMA(m, 9);
> }
> hist = m - s; // histogram
> return hist;
> }
> -----------------
>
> thanks,
>
> dave
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