抛物线SAR指标：描述，设置和应用
抛物线SAR系统是为分析市场趋势而设计的技术指标。 当市场看跌趋势盛行时，指标通常位于图表价格之上。 反之亦然，当市场处于牛市的控制之下时，抛物线SAR仍然低于价格。
抛物面SAR在价格横穿其线后发生变化。 因此，该指标的进一步读数将位于价格水平的另一侧。 与此同时，前一时期的高点和低点成为起点。 抛物线SAR的反转表明趋势已经终止，价格已经进入平淡的市场。
该指标使交易者能够尽可能准确地定义入口点。 如果价格跌破指标线，则应该将其视为关闭多头交易的信号。 如果价格高于指标，那么有必要关闭空头交易。 抛物线SAR常常作为追踪止损。
对于长期交易，无论价格走向哪个方向，抛物线SAR的读数总是增加。 价格走势的节奏会影响指标线的转变。
计算
SAR(i) = SAR(i-1)+ACCELERATION*(EPRICE(i-1)-SAR(i-1))
Where:
SAR(i-1) - 是前一栏中指标的值;
ACCELERATION - 是加速因子;
EPRICE(i-1) - 是上一期间的最高（最低）价格（EPRICE =多头高位，EPRICE =空头低位）。
如果当前柱形图的价格高于先前看涨的价格，则指标值会增加，反之亦然。 加速因子（ACCELERATION）将同时加倍，这将导致抛物线SAR和价格走到一起。 换句话说，价格上涨或下跌越快，指标越接近价格。
The InstaForex Analyst Team
GK InstaFintech © 2007-2024
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