# File lib/cassiopee.rb, line 563
        def filter(posArray)
                $log.debug("filter the position with " << @min_position.to_s << " and " << @max_position.to_s)
                if(@min_position==0 && @max_position==0)
                        return posArray
                end
                filteredArray = Array.new
                i = 0
                posArray.each do |pos|
                        if(i==0)
                                # First elt of array is match length
                                filteredArray << pos
                        end
                        if(i>0 && pos>=@min_position && pos<=@max_position)
                                filteredArray << pos
                        end
                        i +=1
                end
                return filteredArray
        end