Is Crossing Above After [CrossAboveAfter]

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The Is Crossing Above After function indicates when a field crosses above a given threshold after crossing above another threshold within a given period of time. Parameters ------------------ Data                         The value to compare. This is typically a field in a data series or a calculated value. Threshold                 The threshold to compare the data to. This can be a constant, a field, or a calculated value. Previous Threshold   The preceeding threshold to compare the data to. Also a constant, field, or calculation. Period                       The number of bars to look into the past for the previous threshold being crossed.                                  The period does not include the current value.                                  A period of 1 includes the current value and the previous value. Function Value ------------------------ The function returns +1 only when the field actually crosses above the threshold. Furthermore, it only returns +1 if the second (previous) theshold has been crossed (and remained crossed) within a given period of time. In all other situations, it returns 0. Note: The value can not have dropped below the second threshold after crossing it. Usage ----------- The thresholds can be constants or other fields. For example, this function can be used to determine when a field crosses above its moving average after crossing another value. Crossing functions are typically used in entry/exit systems to generate signals when one value rises above another value. See the sample entry/exit systems for an example of using crossing functions in an entry/exit system.