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PureBytes Links
Trading Reference Links
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For those who are wondering what the discussion re
prev is here a snip from the meta stocks guide ...
The PREV constant allows you to create
self-referencing formulas. A self referencing formula is one that is able
to reference the “previous” period’s value of itself.For example, the
following is an example of a self referencing formula:((H+L+C)/3) +
PREVThis simple formula divides the high, low, and closing prices by 3 and
then adds this value to yesterday’s value of the ((H+L+C)/3).The calculation
of the popular indicator On Balance Volume illustrates the use of the PREV
function.
(if(c>ref(c,-1),1,-1)*volume)+PREVAlthough
On Balance Volume can be calculated without the use of the PREV function, an
exponential moving average cannot (other than using the mov() function).
The following formula shows how a 18% exponential moving average (approximately
10-periods) is calculated using the PREV
function.(close*0.18)+(PREV*0.82)
Regards David
hmm maybe it needs a copyright disclaimer or some
thing ?
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