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By the way I'm using MetaStock EOD 8.01
--- In equismetastock@xxxxxxxxxxxxxxx, "stephanegranger_2000"
<grangers@xxxx> wrote:
> Hi everybody,
>
> I'm currently trying to write a system tester for the Triple Screen
> Trading system from Dr. Elder.
>
> I'm having a problem with assigning a value when IsUndefined is
true.
>
> At some point, I need to compute how long the weekly MACD histogram
> has been under 0.
>
> So this is what I wrote,
>
> nbBarsSinceBelowZero :=
> If( IsUndefined(BarsSince(Fml("Wkly MACD Histogram")>0)),
> 10000,
> BarsSince(Fml("Wkly MACD-Histogram")>0));
>
> When I plot the variable nbBarsSinceBelowZero, there is a large gap
> at the beginning of the graph i.e. nbBarsSinceBelowZero is also
> undefined but I would expect it to have a value of 10000 instead.
>
> However if I write
>
> If( IsUndefined(BarsSince(Fml("Wkly MACD Histogram")>0)),
> 10000,
> 0);
>
> I get 10000 at the beginning where I was getting no value and then
a
> lot of 0. So this is clearly a bug in MetaStock.
>
> Does anybody have a work around for that problem?
>
> Thank you,
> Stephane
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