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John Clayburg's formula was discussed here on Mar-06 - Mar-07 2005. The formula below has both plot and exploration sections:
http://finance.groups.yahoo.com/group/amibroker/message/79050
--- In amibroker@xxxxxxxxxxxxxxx, "ct1942" <ct1942@xxxx> wrote:
> Gordan,
>
> Maybe I'm confused, I thought those plot shape statements were showing
> buy and sell signals. It's those signals that I want to show up in the
> AA window and my price window.
>
> The reason I want this, is because I had a John Clayburg scan that
> gave me some pretty good candidates. I got the scan off this forum.
>
> My hard disk crashed 2 wks ago and I lost this scan. I have searched
> and searched this forum high and low and I can't find it anywhere.
>
> I thought maybe by modifing your formula might be the answer to my
> predicament.
>
> Regards,
>
> Cordell
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Gordon Sutherland" <gosuth@x> wrote:
> > Hello Cordell,
> >
> > I wrote the code last year with the help of Bob Johnson. The reason why
> > all the buy and sell signals are appearing on your indicator pane is
> > because there are some 'PlotShapes()' statements in the code. If you
> > want to remove these signals simply 'remark-out' the appropriate lines
> > of code. You will then only see the signals as requested by you from the
> > Report Screen in AA. FYI, with my Australasian database of about 250
> > stocks there are not many signals each day.
> >
> > Regards,
> > Gordon Sutherland
> >
> > -----Original Message-----
> > From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On
> > Behalf Of ct1942
> > Sent: Wednesday, 18 May 2005 10:37 a.m.
> > To: amibroker@xxxxxxxxxxxxxxx
> > Subject: [amibroker] Modify exsisting forumla
> >
> > Help....I and trying to modify the formula below.
> >
> > What I want to do, is run a scan that shows the buy and sell arrows.
> >
> > However, when I run the scan, the AA window shows only a few buy and
> > sells, yet the indicator window shows all the buy and sell arrows.
> >
> > What am I doing wrong?
> >
> > TIA,
> >
> > Cordell
> >
> > /* JOHN CLAYBURG BASED SUPPORT/RESISTANCE LINES
> > Coded by GBS May 2004
> > Modified by Tomasz Janeczko (AmiBroker.com) on 2005-Mar-07
> >
> > /* CATEGORY 3 SUPPORT BREAKOUT TRIGGER FOR SHORTS: */
> >
> > /* PARAMETERS */
> >
> > ColLSC = ParamColor("SU Color",colorOrange);
> > ColLRC = ParamColor("RE Color",colorBlue);
> >
> > LL_3_6 = Ref(L,-6) > Ref(L,-3);
> > LL_3_5 = Ref(L,-5) > Ref(L,-3);
> > LL_3_4 = Ref(L,-4) > Ref(L,-3);
> > LL_3_2 = Ref(L,-2) > Ref(L,-3);
> > LL_3_1 = Ref(L,-1) > Ref(L,-3);
> > LL_3_0 = L > Ref(L,-3);
> > Cat3Sup = LL_3_6 AND LL_3_5 AND LL_3_4 AND LL_3_2 AND LL_3_1 AND
> > LL_3_0;
> >
> > /* SUPPORT LINE ("SC") */
> > y0=ValueWhen(Cat3Sup,Ref(L,-3),2);
> > y1=ValueWhen(Cat3Sup,Ref(L,-3),1);
> > x0=ValueWhen(Cat3Sup,BarIndex(),2)-3;
> > x1=ValueWhen(Cat3Sup,BarIndex(),1)-3;
> >
> > // looking into the future here, but it is
> > // only applied to historical plots to determine
> > // the length of the extension.
> > xsf=ValueWhen(Cat3Sup,BarIndex(),0)-3;
> >
> > /* CATEGORY 3 RESISTANCE BREAKOUT TRIGGER FOR LONGS: */
> > HH_3_6 = Ref(H,-6) < Ref(H,-3);
> > HH_3_5 = Ref(H,-5) < Ref(H,-3);
> > HH_3_4 = Ref(H,-4) < Ref(H,-3);
> > HH_3_2 = Ref(H,-2) < Ref(H,-3);
> > HH_3_1 = Ref(H,-1) < Ref(H,-3);
> > HH_3_0 = H < Ref(H,-3);
> > Cat3Res = HH_3_6 AND HH_3_5 AND HH_3_4 AND HH_3_2 AND HH_3_1 AND
> > HH_3_0;
> >
> > y2=ValueWhen(Cat3Res,Ref(H,-3),2);
> > y3=ValueWhen(Cat3Res,Ref(H,-3),1);
> > x2=ValueWhen(Cat3Res,BarIndex(),2)-3;
> > x3=ValueWhen(Cat3Res,BarIndex(),1)-3;
> >
> > // another look into the future.
> > xrf=ValueWhen(Cat3Res,BarIndex(),0)-3;
> >
> > Plot(C,"C", colorBlack, styleCandle);
> >
> > extendedSup=0;
> > extendedRes=0;
> >
> > NullY0=IsNull(y0);
> > NullY2=IsNull(y2);
> >
> > Buy = Sell = Short = Cover = 0; // FIX: INITIALIZE !!!!
> > GraphXSpace = 3;
> >
> > for ( i = BarCount -1 ; i > 7 ; i-- )
> > {
> > if ( !NullY0[i] ){ // only plot lines when enough datapoints avail.
> > if ( x0[i] != x0[i-1] ) {
> >
> > ms = (y1[i] - y0[i])/(x1[i] - x0[i]); // simple slope of
> > support
> >
> > if ( NOT extendedSup ) { // Haven't extended one yet
> >
> > extendedSup = 1;
> > Line1 = LineArray( x0[i], y0[i], x1[i] + 3, y1[i] + (3 *
> > ms),0,True);
> > Line2 = LineArray( x1[i] + 3, y1[i] + (3 * ms), x1[i]
> > +4,y1 [i] + (4 * ms), 1,True);
> >
> > Sell=Cross(Line2,C);
> > PlotShapes(IIf (Sell,shapeHollowDownArrow,shapeNone),colorRed,0,H,-10);
> >
> > } else { // old Cat3Sup lines, use 'look ahead' extensions
> >
> > Line3 = LineArray( x0[i], y0[i], x1[i] + 3, y1[i] + (3
> > *ms),0,True);
> > Line4 = LineArray( x1[i] + 3, y1[i] + (3 * ms), xsf[i] +
> > 3, y1[i] + ms * (xsf[i] - x1[i] + 3), 0,True);
> >
> > Sell=Cross(Line4,C);
> > PlotShapes(IIf
> > (Sell,shapeHollowDownArrow,shapeNone),colorRed,0,H,-10);
> > }
> > }
> > }
> >
> > if ( !NullY2[i] ){ // only plot lines when enough datapoints avail.
> > if ( x2[i] != x2[i-1] ) {
> >
> > mr = (y3[i] - y2[i])/(x3[i] - x2[i]); // simple slope of
> > resistance
> >
> > if ( NOT extendedRes ) { // Haven't extended one yet
> >
> > extendedRes = 1;
> > Line5= LineArray( x2[i], y2[i], x3[i] + 3, y3[i] + (3
> > *mr),0,True);
> > Line6 = LineArray( x3[i] + 3, y3[i] + (3 * mr), x3[i]
> > +4,y3 [i] + (4 * mr), 1,True);
> > Buy=Cross(C,Line6);
> > PlotShapes(IIf
> > (Buy,shapeUpArrow,shapeNone),colorBrightGreen,0,L,-10);
> >
> > } else { // old Cat3Sup lines, use 'look ahead' extensions
> >
> > Line7= LineArray( x2[i], y2[i], x3[i] + 3, y3[i] + (3 *
> > mr),0,True);
> > Line8 = LineArray( x3[i] + 3, y3[i] + (3 * mr), xrf[i] +
> > 3, y3[i] + mr * (xrf[i] - x3[i] + 3), 0,True);
> >
> > Buy=Cross(C,Line8);
> > PlotShapes(IIf
> > (Buy,shapeUpArrow,shapeNone),colorBrightGreen,0,L,-10);
> > }
> > }
> > }
> > }
> >
> >
> >
> >
> >
> >
> > Please note that this group is for discussion between users only.
> >
> > To get support from AmiBroker please send an e-mail directly to
> > SUPPORT {at} amibroker.com
> >
> > For other support material please check also:
> > http://www.amibroker.com/support.html
> >
> >
> >
> >
> >
> > _____
> >
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