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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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