trader_natr

(PECL trader >= 0.2.0)

trader_natr — Normalized Average True Range

˵��

trader_natr ( array $high , array $low , array $close [, int $timePeriod ] ) : array

��

high: �߼ۣ��顣
low: �ͼۣ��顣
close: ��̼ۣ��顣
timePeriod: Number of period. Valid range from 2 to 100000.

��ֵ

Returns an array with calculated data or false on failure.