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I have no problems with this, the grid lines automatically appear and
disappear with the price levels. With the example I posted. Here are a few
more lines to before
PlotGrid( nb01, COL01 );
PlotGrid( nb02, COL02 );
PlotGrid( nb03, COL03 );
PlotGrid( nb04, COL04 );
PlotGrid( nb05, COL05 );
PlotGrid( nb06, COL06 );
PlotGrid( nb07, COL07 );
PlotGrid( nb08, COL08 );
PlotGrid( nb09, COL09 );
PlotGrid( nb10, COL10 );
PlotGrid( nb11, COL11 );
COLgrid = colorWhite;
PlotGrid(nb01*0.2,COLgrid);
PlotGrid(nb01*0.4,COLgrid);
PlotGrid(nb01*0.6,COLgrid);
PlotGrid(nb01*0.8,COLgrid);
I use them on a P&F chart that has different box size values for price
ranges. The nb01 etc are preset for these ranges.
If you want to set it for the range on screen I also use this to place some
price values at the major grid lines
Here are a few lines for this
barvisible = Status("barvisible");
firstvisiblebar = barvisible AND NOT Ref( barvisible, -1 );
period=BarsSince(firstvisiblebar==1);
scnH = HHV(H,-period);
scnL = LLV(L,-period);
gap = 0;
gap1 = gap;
gap2 = gap+2;
gap3 = gap+4;
gap4 = gap+6;
End = BarIndex() == LastValue( BarIndex() );
//5
PlotShapes( IIf(Cum(1)==LastValue(Cum(1)-gap1) AND nb01>=scnL AND
nb01<=scnH, shapeDigit5+shapePositionAbove, shapeNone), col01, 0, nb01 );
//10
PlotShapes( IIf(Cum(1)==LastValue(Cum(1))-gap2 AND nb02>=scnL AND
nb02<=scnH, shapeDigit1+shapePositionAbove, shapeNone), col02, 0, nb02 );
Cheers,
Graham
http://groups.msn.com/ASXShareTrading
http://groups.msn.com/FMSAustralia
-----Original Message-----
From: kristaura [mailto:camplevel@xxxxxxxxxxxx]
Sent: Wednesday, 9 April 2003 6:44 AM
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Re: Plotting Horizontal Grid Lines
> You might take a look at the plotgrid() function
>
> SYNTAX PlotGrid( level, color = colorDefault )
> RETURNS NOTHING
> FUNCTION Plots hotizontal grid line using built-in dotted
> style atgiven level and color.
> Jayson
I would like horizontal grid lines to cover the full range of the
visible price bars (ie. from the highest high to the lowest low of
visible bars). As the chart is scrolled or zoomed, the grid lines
would automatically extend upwards or downwards accordingly. The
spacing between gridlines is fixed and user selectable.
I used the PlotGrid function and wrote some code (below) which I
think accomplishes this. It determines the price range needed to be
covered by gridlines and then plots the gridlines individually by
stepping through the price range. The size of the step is user
selectable with the Param function.
1) Does anyone know of a more efficient way to accomplish this? This
seems to be somewhat brute force since there are many PlotGrid
statements needed to cover an entire y axis price range (dependent on
step size).
2) I wanted gridlines to appear above and below the highest and
lowest price so I used "H+unit" and "L-unit" with "stylenoDraw" to
fix the scale of the yaxis. Unfortunately, the prices for "H+unit"
and "L-unit" appear in the title bar. They also appear in the small
data window which appears when you position the cursor on a data bar.
Is there a way to mask these prices from not appearing?
All feedback appreciated,
thank you,
kris
***************************************************
/*Plotting horizontal grid lines*/
/*Choose y axis unit size*/
Unit=Param("y axis unit",1,.1,10,.1);
/*Determine y axis range of visible bars*/
Visible=Status("barvisible");
HH=LastValue(Highest(IIf(Visible,H,-1000000)));
LL=LastValue(Lowest(IIf(Visible,L,1000000)));
Minimum=floor(LL/unit)*unit;
Maximum=ceil(HH/unit)*unit;
/*Set y axis scale*/
Plot(H+unit,"",1,styleNoDraw);
Plot(L-unit,"",1,styleNoDraw);
/*Plot bar*/
Plot(O,"Open",1,styleNoDraw);
Plot(H,"High",1,styleNoDraw);
Plot(L,"Low",1,styleNoDraw);
Plot(C,"Close",1,styleBar);
/*Plot horizontal grid*/
Count=0;
PlotGrid(LastValue(Minimum+Count*Unit),colorBlack);
/*Repeat the next two statements many times*/
Count=Count+1;
PlotGrid(LastValue(Minimum+Count*Unit),colorBlack);
Count=Count+1;
...
...
PlotGrid(LastValue(Minimum+Count*Unit),colorBlack);
Count=Count+1;
PlotGrid(LastValue(Minimum+Count*Unit),colorBlack);
***************************************************
--- In amibroker@xxxxxxxxxxxxxxx, "Jayson" <jcasavant@xxxx> wrote:
> You might take a look at the plotgrid() function
>
> SYNTAX PlotGrid( level, color = colorDefault )
> RETURNS NOTHING
> FUNCTION Plots hotizontal grid line using built-in dotted
style at
> given level and color.
>
>
> Jayson
> -----Original Message-----
> From: kristaura [mailto:camplevel@x...]
> Sent: Tuesday, April 08, 2003 4:03 AM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: [amibroker] Plotting Horizontal Grid Lines
>
>
> I am looking for a method/formula to plot horizontal grid lines
along
> the y-axis. I would like to be able to adjust the grid spacing
> manually. As I scroll the chart, I would choose fixed or auto
> scaling, but the grid spacing would remain unchanged. Can someone
> point me in the right direction (message, help file, formula,
> tutorial, etc.).
> thank you
> kris
>
>
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