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[Metastockusers] Writing code for "the first time an event happens"



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Greetings All,

My coding ability is still elementary and the following idea has me 
stumped. Could you show me how to write it?

"While condition1 continues to be true today, today represents the first 
time that Event A has occurred since condition1 began to obtain." More 
specifically, I'd like to identify the first time certain events occur 
during a trend.

Example 1: TRENDUP (any definition of trend) obtains today, and today is 
the first time that there have been three consecutively lower closes (Event 
A) *since* TRENDUP has been true.

Example 2: the EMA(55) is falling, and today is the first time that the 
EMA(8) has risen above the EMA(13) (Event A) since the EMA(55) began to fall.

Within a relatively modest framework I'm OK with most of the variations on 
the theme of Event A, but it's the *since* part that I can't put together.

Philip


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