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Hi Safdar
The first problem to address when using BarsSince()
in an exploration is that you MUST set the number of records to explore, not
leave it up to MS to decide from the "Minimum Records" setting. Using the
"Minimum Records" setting will not force MS to include the necessary number of
bars, and the result will quite probably be N/A. A simple moving average, for
example, forces MetaStock to use the required number of bars, but
BarsSince() does not.
In general terms, a function with a "Periods"
parameter forces MetaStock to use the largest "periods" parameter to decide the
number of bars to include in an exploration. However, any function without
a "Periods" parameter or WITH an "Nth" parameter does not force the exploration
to do the same thing. Essentially a BarsSince() or ValueWhen() type
function will only call 1 or 2 bars when the number of records is set to
"Minimum Bars". Obviously this is not enough records to give a valid result in
most cases.
When you address that problem the code should be as
easy as BarsSince("peak definition");
Regards
Roy
----- Original Message -----
Sent: Sunday, October 30, 2005 7:58 AM
Subject: [EquisMetaStock Group] A Barssince() problem
(corrected)
sorry col a got wrongly pasted the correck query
is
this
The formula ,
cola ::
Peak(1,CLOSE,10)
colb ::
close
colc ::
A:=Peak(1,CLOSE,10)-C;
(A/C)*100
calculates % change in price from recent
peak to
current close in col c.
Now in col d I want to find out number of
days that
have passed since the peak closing value.
It seems to me that
barssince() would be applied, but
I am not been able to figure it
out.
Can any one
help.
Safdar.
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