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I think this code is almost great - my issue with it is that the grid
appears or disappears depending on where I click on the chart. This
is with the show grid setting to "no" in the parameters (I'm also not
sure why the parameter would be "no" to show the grid and "yes" to not
show the grid.
Anybody have a way around this?
--- In amibroker@xxxxxxxxxxxxxxx, "Don Lindberg" <dlindber@xxx> wrote:
>
> I have used the AFL code below with good success. Don't know if it will
> satisfy you, but give it a try.
>
> Donald F Lindberg
>
> ------------------------- Begin Code
---------------------------------------
> _SECTION_BEGIN( "Point & Figure w Values adj" );
>
> GraphXSpace = 5;
>
> SetChartBkColor( ParamColor( "BackGroundColor", colorBlack) );
>
> //GraphColor = ParamColor("GarphColor",colorLightGrey);
>
> GridColor = ParamColor( "GridColor", colorLightGrey );
>
> Scaling = ParamList( "Scaling Method", "Traditional|Percentage|AVG True
> Range" );
>
> if ( scaling == "Traditional" )
>
> Box = Param( "Box", 1, 0.2, 10, 0.1 );
>
> else
>
> if ( scaling == "Percentage" )
>
> Box = Param( "Box ", 1, 0.2, 10, 0.1 ) / 100 * LastValue( C );
>
> else
>
> if ( scaling == "AVG True Range" )
>
> Box = Param( "Box", 1, 0.3, 5, 0.1 ) * LastValue( ATR ( 20 ) );
>
> shiftChart = 0;
>
> shiftLastClose = 1;
>
> shiftGrid = 7;
>
> shiftPriceAxis = 2;
>
> Reverse = Param( "Reverse", 3, 1, 5 );
>
> j = 0;
>
> PFL[0] = Box * ceil( Low[0] / Box ) + Box;
>
> PFH[0] = Box * floor( High[0] / Box );
>
> direction = 0;
>
> for ( i = 1; i < BarCount; i++ )
>
> {
>
> if ( direction[j] == 0 )
>
> {
>
> if ( Low[i] <= PFL[j] - Box )
>
> {
>
> PFL[j] = Box * ceil( Low[i] / Box );
>
> }
>
> else
>
> {
>
> if ( High[i] >= PFL[j] + Reverse*Box )
>
> {
>
> j++;
>
> direction[j] = 1;
>
> PFH[j] = Box * floor( High[i] / Box );
>
> PFL[j] = PFL[j - 1] + Box;
>
> }
>
> }
>
> }
>
> else
>
> {
>
> if ( High[i] >= PFH[j] + Box )
>
> {
>
> PFH[j] = Box * floor( High[i] / Box );
>
> }
>
> else
>
> {
>
> if ( Low[i] <= PFH[j] - Reverse * Box )
>
> {
>
> j++;
>
> direction[j] = 0;
>
> PFH[j] = PFH[j - 1] - Box;
>
> PFL[j] = Box * ceil( Low[i] / Box );
>
> }
>
> }
>
> }
>
> }
>
> delta = BarCount - j - 1;
>
> direction = Ref( direction, - delta );
>
> Hi = Ref( PFH, -delta ) + Box / 2;
>
> Lo = Ref( PFL, -delta ) - Box / 2;
>
> Cl = IIf( direction == 1, Hi, Lo );
>
> Op = IIf( direction == 1, Cl - Box, Cl + Box );
>
> Graphcolor = IIf( direction == 1, ParamColor( "X_Color",
colorBrightGreen ),
>
> ParamColor( "O_Color", colorRed ) );
>
> PlotOHLC( Op, Hi, Lo, Cl, "", GraphColor ,
>
> stylePointAndFigure | styleNoLabel, 0, 0 , shiftChart );
>
> PlotOHLC( Op, Hi, Lo, Cl, "", GraphColor , stylePointAndFigure |
> styleNoLabel, 0, 0 , shiftChart );
>
> Last = Ref( LastValue( C ), -( BarCount - 1 ) );
>
> Plot( Last, "", colorRed, styleNoLine | styleDots, 0 , 0,
shiftLastClose );
>
> // selected value
>
> Value = IIf( direction > 0, SelectedValue( Hi ) - box / 2,
SelectedValue( Lo
> ) + box / 2 );
>
>
//-----------------------------------------------------------------------
>
> // GRID CONSTRUCTION
>
> //----------------------------------------------------------------------
>
> PlotGridLines = ParamToggle( "PlotdGrid", "Yes! |No", 1 ) ;
>
> if ( PlotGridLines )
>
> {
>
> begin = SelectedValue( BarIndex() );
>
> end = LastValue( BarIndex() );
>
> period = end - begin + 1;
>
> if ( begin < end )
>
> {
>
> ScreenHigh = LastValue( HHV( cl, period ) );
>
> ScreenLow = LastValue( LLV( Cl, period ) );
>
> top = LineArray( begin - shiftGrid, screenHigh, end, screenhigh, 0 ,
1 );
>
> Bot = LineArray( begin - shiftGrid, screenlow, end, screenLow, 0, 1 );
>
> Plot( top, "", gridColor, styleLine | styleNoLabel , 0, 0, shiftGrid );
>
> //Plot( bot, "", gridColor,styleLine|styleNoLabel, 0 , 0 , shiftGrid);
>
> VerticalGrid = IIf ( BarIndex() >= begin, IIf( direction == 1,
screenHigh,
> screenLow ), Null );
>
> Plot ( VerticalGrid, "", gridColor, styleStaircase | styleNoLabel,
0, 0, 1
> );
>
> format = 8.2;
>
> for ( n = LastValue( bot ); n < LastValue( top ) - 0.5*box; n = n +
box )
>
> {
>
> Plot( bot , "", gridColor, styleLine | styleNoLabel, 0, 0 , shiftGrid );
>
> text = NumToStr( LastValue( bot ) + 0.5 * box, format );
>
> xposition = BarCount + shiftPriceaxis;
>
> yPosition = LastValue( bot ) + 0.27 * box;
>
> PlotText( text, xPosition , yPosition, colorBlue );
>
> bot = bot + box;
>
> Graphcolor = IIf( direction == 1, ParamColor( "X_Color",
colorBrightGreen ),
>
> ParamColor( "O_Color", colorRed ) );
>
> PlotOHLC( Op, Hi, Lo, Cl, "", GraphColor ,
>
> stylePointAndFigure | styleNoLabel, 0, 0 , shiftChart );
>
> }
>
> }
>
> }
>
>
>
> //---------------------------------------------------------------------
>
> // TITLE
>
> //----------------------------------------------------------------------
>
> Title = "\n" +
>
> " Instrument : " + Name() + FullName() + "\n " +
>
> "Formula : " + " Point & Figure (High/Low Range)" + "\n " +
>
> "Box : " + NumToStr( Box, 4.4 ) + " " +
>
> "Reverse : " + NumToStr( Reverse, 2.0 ) + "\n " +
>
> "ATR : " + WriteVal( LastValue( ATR( 100 ) ), format = 4.4 );
>
> _SECTION_END();
>
> ------------------------ End Code -------------------------
>
>
>
>
> _____
>
> From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx]
On Behalf
> Of rr_bt
> Sent: Sunday, May 04, 2008 1:10 AM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: [amibroker] great p&f chart
>
>
>
> hello,
>
> i'm new to amibroker. checked out the p&f charts from the afl library.
> copied them into ab but i found the charts difficult to read.
>
> i'm looking for a chart like this one
> http://stockcharts. <http://stockcharts.com/def/servlet/SC.pnf?c=ibm,P>
> com/def/servlet/SC.pnf?c=ibm,P which has some timing
> references (year on the bottom axis and month reflected in the chart
> symbols).
>
> just wondering if it would be possible to code the stockcharts.com
> chart in amibroker afl? how difficult?
>
> i trialed bull's eye broker product but couldn't get it to work with ab
> data (supposed to read ab data directly).
>
> my preference is to have the p&f code in ab so its nicely integrated.
> thanks.
>
------------------------------------
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