Function: gradient[2](band pass(minus(numbers('ryy') if numbers("xxx") > numbers('rrr') else numbers('xry'), numbers('rrr')))) if sqrt(gradient[2](band pass(minus(numbers('ryy') if numbers('rrr') > numbers("xxx") else numbers('xry'), numbers('rrr'))))) > minus(numbers('ryy') if numbers('xry') > numbers("xxx") else numbers('rrr'), numbers('rrr')) else band pass(minus(numbers("xxx") if numbers('ryy') > numbers('xry') else numbers('rrr'), numbers('rrr')))