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Check
out the AMA() function:
// PREV
Z =(A*B)+(C*PREV);
can be written in AFL as:
Z = AMA2( A(array), B, C );
also:
xx = FactorA * Close + (FactorB * PREV(xx)); //
metastock
translates to:
xx = AMA2( Close, FactorA, FactorB );
Hi,
is there an
equivalent to MetaStock's PREV variable, which allows to
reverence an
earlier value of an array while it is being defined? Or
what would be the
apropriate AFL concept to achive a similar behaviour?
E.g.:
I'd like
to calculate Heikin Ashi O/C/H/L values. HAOpen for instance
is
defined as
HaClose(t) = (O+H+L+C)/4;
HaOpen(t) = (HaOpen(t-1) +
HaClose(t-1))/2;
using Ref(HaOpen,-1) does not work, since HaOpen is
undefined at this
time, Ref(HaClose,-1) is fine, since it was defined
previously.
In MetaStock, one would write:
HaOpen:=(PREV +
Ref(HaOpen,-1)/2;
What's the right way to do this in AFL?
Thanks
for your support.
~Lars
Check AmiBroker web
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http://www.amibroker.com/
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