Re: [amibroker] Formulas for "Automatic Scaling" levels ??

[Terry <MagicTH@xxxxxxxxxxx>]

No quite following exactly what you want, but try these ideas:

indicator = condition; //your indicator

//Plots a blue background
Plot(True,"",colorBlue,styleArea|styleOwnScale,0,1);

//Automatic scaling of "indicator"
Plot(indicator,"indicator",colorWhite, styleArea|styleOwnScale);

You may have to reverse the order of plotting to get the white on top.
-- 
Terry


From: "treliff" <treliff@xxxxxxxxx>
Reply-To: amibroker@xxxxxxxxxxxxxxx
Date: Sat, 30 Oct 2004 06:25:48 -0000
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Formulas for "Automatic Scaling" levels ??


I wish to plot one indicator as a white StyleArea plot with a colored
background (such that the area ABOVE the indicator values is colored).

Because for comparison I want this pane displayed next to a
"normal" 
pane I need to determine the "Automatic Scaling" levels (so I
can first color the complete background and then overlay the white
StyleArea plot).

In an earlier message

http://finance.groups.yahoo.com/group/amibroker/message/37182

I found TJ's explanation:

"
to get highest and lowest value of all quotes inside visible area use:

array = ROC( Close, 10 );

visible = Status("barvisible");

HH = LastValue( Highest( IIF( visible, array, -999999 ) ) );
LL = LastValue( Lowest( IIF( visible, array, 999999 ) ) );
"

I just don't get it, for sure HH and LL itself are not the scaling
levels, there must at least be some additional adding/subtracting
going on. 

Anyone knows the exact formulas for the Auto Scaling levels? (Or... a
more creative way to create my desired plotstyle? Minor minus of my
approach is that it removes the gridlines.) Thanks!

-treliff





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