[amibroker] Relative Performance Chart

["Rick" <rrogers@xxxxxxxxxxxxx>]

Hello:
Can anyone show me how to apply the BeginValue and EndValue functions 
to the Relative Performance chart included in the "Basic Charts"? 

I would like to allow user to double click chart to apply date markers 
to vary the calculation period.

I have modified the standard code to add:

_N( TickerList = CategoryGetSymbols( categoryIndustry,IndustryID()));

to automatically load all symbols from Industry Group. This works well 
with small groups to quickly evaluate the comparative RS visually.

thanks in advance for any help available,
Rick





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