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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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