[amibroker] Re: How to draw a graph on certain bars only

["eric tao" <erichtao@xxxxxxxxx>]

Null is not 0 anymore?!
sorry I don't have ami with me to do the test. Are you saying if I
assign null to a array, it will plot nothing instead of 0 like before?

Thank you.

--- In amibroker@xxxxxxxxxxxxxxx, "archstone2003" <archstone2003@xxx>
wrote:
>
> Hi,
> 
> I asked the quesiton to Yahoo group because I didn't receivce the 
> reply from Amibroker support. Usually they reply really fast after I 
> asked them, but this time it was taking longer and I though they may 
> not have an answer. 
> 
> But afte I made the post I got the answer from them, and I would like 
> to share it with you as well. 
> 
> This is the core part of their reply: 
> 
> ======================================
> Simply use Null value for days when you don't want to plot:
> 
> array = IIF( MACD() < 0, MACD(), Null );
> 
> Plot( array, "Only MACD above zero", colorRed );
> 
> ======================================
> 
> Have a nice day!
> 
> 
> 
> --- In amibroker@xxxxxxxxxxxxxxx, "Jerry Gress" 
> <pleasenospamplease@> wrote:
> >
> > Hello,
> > 
> > Try using stylecloud, example below for some R/S zones:
> > 
> > 
> > _SECTION_BEGIN("Color");
> > PlotOHLC(R3,R3,R3a,R3a,"",r1color,styleCloud|styleNoRescale);//r3
> > 
> > 
> > 
> > Jerry Gress
> > Stockton, Ca.
> > 
> > -----Original Message-----
> > From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] 
> On Behalf
> > Of archstone2003
> > Sent: Friday, August 17, 2007 1:23 AM
> > To: amibroker@xxxxxxxxxxxxxxx
> > Subject: [amibroker] How to draw a graph on certain bars only
> > 
> > Hi,
> > 
> > I want to draw something on the price pane, and I want to draw it 
> only 
> > when certain condition is met, i.e., I want to draw it for certain 
> days 
> > but don't want to show it otherwise.
> > 
> > Is there a way to do this?
> > 
> > One way would be to use the background color to draw it when I 
> don't 
> > want to show it, but how can I retrieve the background color in AFL?
> > 
> > Is there any better ways?
> > 
> > Thanks.
> > 
> > Wei
> > 
> > 
> > 
> > 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 NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> > http://www.amibroker.com/devlog/
> > 
> > For other support material please check also:
> > http://www.amibroker.com/support.html
> >  
> > Yahoo! Groups Links
> >
>




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