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Hi William,
Maybe it's just me, but the Param:
Periods= Param("Periods", 3, 1, 100, 1);
...doesn't seem to work.
Dave.
--- In amibroker@xxxxxxxxxxxxxxx, "William Peters"
<williampeters@xxxx> wrote:
> Hi,
>
> Just sharing some code that I originally found on this forum
(somewhere) and
> was subsequently found to be wrong. Tomasz has made the
corrections so here
> it is. I've also added it to the AFL library on the AmiBroker web site.
>
> /* Standard Error Bands */
> Var= Param("Standard Error", 18, 1, 100, 1);
> Periods= Param("Periods", 3, 1, 100, 1);
>
> function SteBand( array, periods, upper )
> {
> Lr = LinearReg( array, periods );
> se = StdErr( array, periods );
> return LR + IIf( upper, 1, -1 ) * 2 * se;
> }
>
> upperstderrband = SteBand( C, Var, True );
> lowerstderrband = SteBand( C, Var, False );
> midstderrband = (upperstderrband + lowerstderrband )/2;
>
> Plot(upperstderrband ,"upperstderrband ",colorGreen,4);
> Plot(Close,"Close",colorBlack,styleCandle);
> Plot(lowerstderrband ,"lowerstderrband ",colorRed,4);
> Plot(midstderrband ,"midstderrband ",colorBlack ,styleLine);
> GraphXSpace = 3;
> Regards,
> William Peters
> www.amitools.com
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