Hello,
AFL offers actually superset of
capabilities of "general purpose"
language like Pascal as it allows both "normal"
(i.e. scalar)
constructs like Pascal AND array based
operations (not available in Pascal).
It is UP TO YOU which one you use. There are NO
limitations and
of course in your case j variabel CAN be used as
moving average period.
The only problem is YOUR SKILL, not the
language.
Correct way to code thing like this
"// this
checks whether the price is above its moving av 52 bars ago
and if so
checks whether the close crossed mov av during the last 52
bars for a
range of moving av periods and return the moing av period
value when it
crosses"
is ( I am showing ONE OF MANY possible ways to
code this,
specifially I am showing the way how to code it
WITHOUT REF() statement
just to show you how you can use subscript
operator (as in Pascal))
// this checks
whether the price is above its moving av 52 bars ago
//AND
if so checks whether the Close crossed mov av during the last 52
//bars
for a range of moving av periods AND return the moing av period
//value
when it crosses
function CheckMACross( period, Lookback )
{
result = False;
Cma =
MA( C, period );
bar =
BarCount -
1 - Lookback;
if( Close[ bar ] < Cma[ bar ] )
{
while( bar < BarCount )
{
if( Close[ bar ] > Cma[ bar ] )
{
result =
True;
}
}
}
return result;
}
function WCBelowMALine()
{
found
= False;
for ( period =
52; j < 3 AND NOT found; j--)
{
found = CheckMACross( j, 52 );
}
return result;
}
Best regards,
Tomasz Janeczko
amibroker.com