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Hi Graham,
Sorry for the delay in responding - it was late
here in the US and I had to go to bed : - (
I didnt have the time to try and figure out the
details of the countback line, but I wrote this little code that will identify
previous highs and lows. Maybe you can modify it to get what you are looking
for.
Steve
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
<A title=gkavanagh@xxxxxxxxxxxxx
href="">Graham
To: <A title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: Tuesday, September 23, 2003 1:08
AM
Subject: RE: [amibroker] Stepping
backwards in loop
SteveIt basically looks for the previous bar with
higher high, or lower low thanthe current bar, and progresses back till
you have the required number ofhighs/lows. Eg In my example I am looking
for the 3 day CBL, ie the 3rdhigher high, or lower low from the selected
bar. Here are some web refences for it<A
href="">http://trader.online.pl/MSZ/e-w-Countback_line.html<A
href="">http://www.guppytraders.com/gup18.htmCheers,Graham<A
href="">http://groups.msn.com/ASXShareTrading<A
href="">http://groups.msn.com/FMSAustralia-----Original
Message-----From: Steve Dugas [mailto:sjdugas@xxxxxxxxxxx] Sent:
Tuesday, 23 September 2003 12:07 PMTo:
amibroker@xxxxxxxxxxxxxxxSubject: Re: [amibroker] Stepping backwards in
loopGraham,I have heard the term Countback Line but I dont
know what it does. If youwant to try describing how it works, I could
maybe take a stab at it.Steve----- Original Message -----
From: Graham To: amibroker@xxxxxxxxxxxxxxx Sent: Monday, September
22, 2003 11:39 PMSubject: RE: [amibroker] Stepping backwards in
loopSteveInititally it was for the 3 day count back line, but
I am endeavouring toexpand on this for finding short term peaks and
troughs and some otherthoughts I have for some systems once I get it
working. When I plot it the lines start at the first occurrence of the
particular low(or high) price. Here is the whole picture of the formula I
am using at themoment as I try to get it working the way I am
wanting.// INDICATOR //Count Back Line //by Graham Kavanagh 22
Sep 2003//Plot(C, "Close", colorBlack,
styleBar+styleNoLabel);period = 3;Bar =
SelectedValue(BarIndex());LastBar = LastValue(BarIndex());start =
Lastbar-bar;LowerLow[0] = SelectedValue(L);for ( j=1;
j<=period; j++ ){for ( i=1 ; i < Lastbar ; i++ ){
if ( L[i] < LowerLow[j-1] ) { LowerLow[j] =
L[i]; }}}Lowerline =
SelectedValue(LowerLow[period]);BarL = ValueWhen(
L==Lowerline, BarIndex(), 1 );CBLow = IIf( BarIndex()>=BarL,
Lowerline, Null );Plot(CBLow, EncodeColor(colorRed)+ "3 day CB Low",
colorRed, styleDots);//Plot(SelectedValue(L), EncodeColor(colorRed)+
"Bar Low", colorRed,styleLine);HigherHigh[0] =
SelectedValue(H);for ( j=1; j<=period; j++ ){for ( i=1; i
<Bar ; i++ ){ if ( H[i] > HigherHigh[j-1] )
{ HigherHigh[j] = H[i];
}}}Higherline =
SelectedValue(HigherHigh[period]);BarH = ValueWhen(
H==Higherline, BarIndex(), 1 );CBHigh = IIf( BarIndex()>=BarH,
Higherline, Null );//Plot(SelectedValue(H),
EncodeColor(colorGreen)+ "Bar high",
colorGreen,styleLine);Plot(CBHigh, EncodeColor(colorGreen)+ "3 day CB
High", colorGreen,styleDots);Title = Name() + " " + Date() + " / "
+ BarCount + " / " + bar + " / " +Lastbar + " ? "+ L[0] + " ?
";Cheers,Graham<A
href="">http://groups.msn.com/ASXShareTrading<A
href="">http://groups.msn.com/FMSAustralia-----Original
Message-----From: Steve Dugas [mailto:sjdugas@xxxxxxxxxxx] Sent:
Tuesday, 23 September 2003 9:59 AMTo:
amibroker@xxxxxxxxxxxxxxxSubject: Re: [amibroker] Stepping backwards in
loopHi Graham,Can you tell me what you are trying to do?
From looking at your code, itappears that the only elements of LowerLow
that can ever get changed are 1,2 and 3.Steve----- Original
Message ----- From: Graham To: AB yahoo group Sent: Monday,
September 22, 2003 8:58 PMSubject: [amibroker] Stepping backwards in
loopI have this formula in a loop but it steps through the values
from thebeginning of the data rather than from the end. I have tried
reversing the line " for ( i=1; i < bar ; i++ ) " to " for
(i=bar; i > 0 ; i-- ) " but stills seems to check the bars in the
forwarddirection. All I want to do is go back from the selected (or
last) bar. Help appreciated. period = 3;Bar =
SelectedValue(BarIndex());LastBar = LastValue(BarIndex());start =
Lastbar-bar;LowerLow[0] = SelectedValue(L);for ( j=1;
j<=period; j++ ){for ( i=1; i < bar ; i++ ){ if (
L[i] < LowerLow[j-1] ) { LowerLow[j] =
L[i]; }}}Cheers,Graham<A
href="">http://groups.msn.com/ASXShareTrading<A
href="">http://groups.msn.com/FMSAustraliaSend
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