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> I tried this, but the trades don't take place as the high and low
> pivots are taken out but at strange places in between the peaks and
> troughs.
I don't have these PivotHighVS/PivotLowVS functions. Are they in
TS2k? (I'm on TS4.) So I can't try this myself to see what's going
on.
How about you send me a GIF of a chart with the system on it, showing
where it buys & sells? And indicate where the pivot function thinks
the pivots are. Maybe that will give me an idea of what's happening.
Oh, one thing comes to mind: if this PivotHighVS function returns -1
if it doesn't find a pivot, that might cause a problem. The trouble
is, if the pivot function returns a -1 until it finds a pivot, then
suddenly returns the H or L value when it does find one, it might
cross the current bar's H or L as it goes from -1 to the pivot value.
E.g. if the previous pivot was 1400, and the current H is 1390, and
then the previous pivot goes "out of range" of the PivotHighVS
function, then PivHigh goes from 1400 to -1, and "H crosses over
PivHigh" is TRUE.
You might try making sure you never compare the H/L to a value that
might be -1 on the current or previous bar. Maybe something like
this?
PivHigh = PivotHighVS( ... );
if PivHigh <> -1 then begin
GoodPivHigh = PivHigh
if H crosses over GoodPivHigh then...
That way you don't compare H to something that bounces between -1 and
a valid pivot value. GoodPivHigh always has a valid pivot value.
There might still be a problem since it will have the PREVIOUS pivot
value until it finds a new one, and you might run into problems if
the good pivots bracket the H. E.g. if the old pivot was 1400, then
PivHigh goes to -1 while it can't find a pivot, then it finds a pivot
at 1380 at a time when the H is 1390, GoodPivHigh will change from
1400 to 1380 -- and H "crosses over" GoodPivHigh even though it
hasn't crossed over 1380. (Actually GoodPivHigh has "crossed under"
H, but the two tests are equivalent in EL.)
Gary
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