This is a function that locates specific events (using the actions.search
argument) and create new variables associate with this strategy.
VarActionPosition(data, action.var, actions.search)This function returns a data.frame with the frequency of each specific events
from the actions.search argument and "Freq.Actions.Search" summary.
A matrix or data.frame where the 'action.var' variable is
a vector with actions. See DataActionsbyID function.
A character vector with the actions to be searched.