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Re: Alert Trigger Coding Paradox



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if close crosses above myAlert......if close crosses below myAlert

"crosses above" and "crosses below" are EL functions.

Alexander wrote:

> I want to sound an alert whenever price touches a value I mathematically
> calculate, MyAlertValue. That calculated value however may not exactly equal an
> allowed price for a market. For example, MyAlertValue = 1110.17 in an Emini
> chart but the Emini only trades in .25 increments. So the line (in an Update
> Every Tick chart):
>    if close = MyAlertValue
> does not work since price will never equal 1110.17 (only 1110.25 or 1110.0).
> Nor can I use the line:
>    if close >= MyAlertValue or close <= MyAlertValue
> since the price will always be higher or lower than a given value and the alert
> always triggers. Also, using close[1] and close to test price direction:
>   close[1] < MyAlertValueand close >= MyAlertValue) or (close[1] > MyAlertValue
> and close <= MyAlertValue)
> doesn't work since close[1] is the close of the previous bar, not the previous
> price tick of the current bar.
>
> So how does one code an alert to trigger when price in a chart touches a given
> price from above or below?
>
> Thanks!