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You cannot go smaller with timeframe, only to larger periods
ie you can calc 30 minute timeframe if chart is 15 minute
On 9/25/05, Steve <avalon-ardy@xxxxxxxxxxxxxxx> wrote:
>
> Ok, another AFL logic question . I'm trying to filter a MA crossover on a 30min chart by requiring that at the X-over the SAR() is below the low & the SAR() on the 15 minute chart is also below the low of the 15 TF. I've written the following but on checking the Sar30 & Sar15 variables they are the same. What have I ballsed up this time ?
>
>
> MA7 = EMA(C,7);
>
> MA21 = EMA(C,21);
>
> MA55= EMA(C,55);
>
> SAR30 = SAR();
>
> TimeFrameSet(in15Minute);
>
> SAR15 = SAR();
>
> TimeFrameRestore();
>
> SAR15= TimeFrameExpand(SAR15,in15Minute);
>
> Min15 = TimeFrameGetPrice("L", in15Minute);
>
> Buycond1 = MA50 > MA25 && Cross(MA10,MA50) AND SAR30 < L && SAR15 < Min15;//
>
> Buy = Buycond1;
>
> Filter= Buy ;
>
> AddColumn( Buycond1, "buycond1", 1 );
>
> AddColumn( L, "low", 1.4 );
>
> AddColumn( Min15, "min15", 1.4 );
>
> AddColumn( SAR30, "sar30", 1.4 );
>
> AddColumn( SAR15, "sar15", 1.4 );
>
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Cheers
Graham
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