Cross

Cross(Array1, Array2) as Boolean OR Cross(Array, Name) as Boolean OR Cross(Name, Name) as Boolean

Cross returns True if first parameter (it can be an array or the string name of an existing indicator!) crosses ABOVE the second parameter!

This function has three parameters:

Array    An array, no matter the size.

Name    The name of an existing indicator

Place    The place where the crossing is tested. (Tested on Place and Place-1)
Here is how it works mathematically: Return True if (1stParam(t-1) < 2ndParam(t-1)) AND (1stParam(t) >= 2ndParam(t))

Example:

' This is a system
Sub Main()
RSIind = RSI(14)
RSIma = SMA(RSI(14), 10) ' 10 is the period of the average, 14 the RSI's period
For CurrentBar = BeginBar to EndBar
If Cross(RSIma, RSIind, CurrentBar) then Buy(CurrentBar)
If Cross(RSIind, RSIma, CurrentBar) then Sell(CurrentBar)
Next
End Sub

Array	An array, no matter the size.
Name	The name of an existing indicator
Place	The place where the crossing is tested. (Tested on Place and Place-1) Here is how it works mathematically: Return True if (1stParam(t-1) < 2ndParam(t-1)) AND (1stParam(t) >= 2ndParam(t))