[amibroker] How to show trendlines for highest high and lowest low?

["eddmhng" <eddmhng@xxxxxxxxxxxx>]

Hi All AB users,

I am a new user of Amibroker and I don't know how to solve this problem.

I want to have two trend lines on the chart that show the highest high of the last 20 days and the lowest low of the last 10 days.

Anyone can help me out?   

Thank you very much.

Cheers,
Ed




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