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<SPAN
class=953281814-27062004>Thanks for chiming in Dimitris, but with all due
respect, this is the same idea that I originally said has problems when I asked
the question, and the same as what Graham suggested. Did you look at the code I
posted? The function Blank() in there does this too. Yes, it's workable if you
modify every indicator on every pane where you want to do this, but that's not
ideal.
<SPAN
class=953281814-27062004>
<SPAN
class=953281814-27062004>Dave
<BLOCKQUOTE
>---
In amibroker@xxxxxxxxxxxxxxx, "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx>
wrote:> Dave,> There is no problem to hide any last d bars
of OHLC or any other > indicator.> [d should be the same for
OHLC but, it may be different for each > indicator ]>
> // Definition of Hide() function> function Hide(Var,d)>
{ > newvar=0;>
newvar=IIf(Cum(1)<=LastValue(Cum(1))-d,Var,Null);> return
newvar;> }> //Applications> p=5;>
O1=Hide(O,p);> H1=Hide(H,p);> L1=Hide(L,p);>
C1=Hide(C,p);PlotOHLC(O1,H1,L1,C1,"c",1,styleCandle);>
Plot(Hide(MACD(),2*p),"MACD",colorRed,styleLeftAxisScale);>
Plot(Hide(Signal(),2*p-1),"SIGNAL",colorBlue,styleLeftAxisScale);>
> Dimitris Tsokakis> --- In amibroker@xxxxxxxxxxxxxxx, "Dave
Merrill" <dmerrill@xxxx> > wrote:> > Thanks for your
reply Graham, but as I mentioned, I've tried that, > and it>
> has problems.> > > > Try the more complete setup
below, with a couple of random > indicators added.> >
Everything's fine with nothing blanked. Blank out one bar, and the
> price> > plot still looks fine, but MACD and RSI spike to
zero on the null > price> > bars, causing them to rescale,
the MACD illegibly. Blank a few more > bars,> > past a
SAR cross, and SAR does the same thing.> > > > For another
approach, comment out the BlankAll() line, and re-enable> >
BlankAll2(), on the next line. This shifts everything to the > right,
"off the> > page", and then back. I tried this because that seemed
very > analgous to> > those bars really not existing. Turns
out that AB seems to treat > them as> > missing data (makes
sense), and uses the existing last value for > the missing> >
bars.> > > > Is there a way to work around all this? Of
course, blank the > indicators too.> > But that means you
have to recode every indicator on any pane you > want to do>
> this with.> > > > I'd much rather just drop in a
single function to adjust the price > bars, and> > have
everything just work. But setting things to null doesn't > really do
it.> > Any other ideas on a good blanking mechanism?> >
> > What I'd really like is a built in feature that handled this
> automatically,> > including blanking BuyPrice, ShortPrice
etc, and any new built in > variables> > as they get
added.> > > > Clearer?> > > >
Dave> > > > ---------------> > global gBI,
gBarsBlanked;> > > > gBarsBlanked = Param( "bars", 0, 100,
0, -1);> > gBI = BarIndex();> > > > function
IsBlanked() {> > return gBI >= (BarCount -
gBarsBlanked);> > }> > function Blank(array) {>
> x = IIf(IsBlanked(), Null, array);> > return
x;> > }> > function Blank2(array) {> > x =
Ref(Ref(array, -gBarsBlanked), gBarsBlanked);> > return
x;> > }> > function BlankAll() {> > O =
Blank(O); H = Blank(H); L = Blank(L); C = Blank(C);> > Avg =
Blank(Avg); V = Blank(V);> > }> > function BlankAll2()
{> > O = Blank2(O); H = Blank2(H); L = Blank2(L); C =
Blank2(C);> > Avg = Blank2(Avg); V = Blank2(V);> >
}> > function OHLCTitle() {> > return>
> Interval(2) + " " + Date()> > + " Open
= " + O> > + ", High = " + H> > +
", Low = " + L> > + ", Close";> > }>
> > > BlankAll();> > //BlankAll2();> >
> > GraphXSpace = 5;> > Plot(C, OHLCTitle(), colorDefault,
styleCandle);> > Plot(V, "Volume", colorBlue,
styleHistogram+styleOwnScale, 0,> > LastValue(Highest(V)) *
2);> > //Plot(IIf(IsBlanked(), 1, 0), "", colorLightGrey,>
> styleArea+styleOwnScale+styleNoLabel, 0, .5);> > > >
m = MACD(); r = RSI(); s = SAR();> > > > Plot(m, "MACD",
colorBlue, styleOwnScale);> > Plot(r, "RSI", colorRed,
styleOwnScale);> > Plot(s, "SAR", colorYellow,
styleDots+styleNoLine);> > /*> > Plot(Blank(m), "MACD",
colorBlue, styleOwnScale);> > Plot(Blank(r), "RSI", colorRed,
styleOwnScale);> > Plot(Blank(s), "SAR", colorYellow,
styleDots+styleNoLine);> > */> > > >
---------------> > Try this as an example> >
> > x = Param( "bars", 1, 1, 10, 1);> >
> > Plot( IIf( BarIndex()<=BarCount-x, C, Null), "",
colorBlack, > styleCandle);> > > >
Cheers,> > Graham> > <A
href="">http://e-wire.net.au/~eb_kavan/
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