Function: numbers("xxr") if band pass(numbers("yxx")) > numbers("yxx") else numbers('yxr') if band pass(numbers("yxx")) > gradient[2](band pass(numbers("yxx")) if numbers("yxx") > numbers('yxr') else numbers("xxr")) else 2 *(gradient[2](band pass(numbers("yxx")) if numbers("yxx") > numbers('yxr') else numbers("xxr")))
