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Parabolic line SAR

According to Wilder 's estimates count, parabolic SAR most suitable trend securities, which accounted for about 30 percent of the time. This means that the indicator is easy to be whiplashed more than 50 % of the time or when the security is not trending. After all, SAR is designed to catch up with the trend and follow the trend like a trailing stop loss. Like most indicators, signal quality depends on the settings and characteristics of basic security. The correct settings and good trends can produce a good trading system. Wrong settings will lead to whipping, loss and frustration. There is no golden rule or one-size-fits-all setting. Each security should be evaluated based on its own characteristics. Parabolic SAR should also be used in combination with other indicators and technical analysis techniques. For example, before considering signal, may be used Wilder average index to estimate the direction of the count intensity trends.

Solution release

SAR follows the price and can be regarded as a trend-following indicator. Once the downward trend began to reverse and, SAR will be like tracking stop loss follow the same price. As long as the upward trend remains unchanged, the stop loss will continue to rise. In other words, SAR never far will not fall in an uptrend, and as prices rise and will continue to protect profits. This indicator prevents the trend of lowering the stop loss. Once prices stop rising and SAR anti-less turn, then began a downward trend, SAR higher than the price. SAR following the lower prices, like tracking only loss of the same. As long as the downward trend continues, the stop loss will continue to fall. Because SAR never far not rise in a downtrend, so it will continue to protect the profits of short positions.

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Step increment

The electrical spreadsheet shown in the examples, this step (also referred to as acceleration factor ( the AF )) is a multiplier, it will affect the SAR of the rate of change. SharpCharts a user can set the maximum step length and step length. As the trend expands, the step gradually increases until it reaches the maximum value set by the user. The steps determine the sensitivity of the SAR indicator.

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SAR sensitivity can pass through a step to reduce reduced. A lower step can keep the SAR away from the price, which makes a reversal less likely. Similarly, the SAR sensitivity can be improved by increasing the step size . Higher magnitude will SAR closer to the price go situation, which makes it more likely to be reversed. If the step length is set too high, the indicator will often reverse. This will generate whiplash and fail to capture the trend.

Figure 6 shows IBM with SAR ( .01 , .20 ) . The step size is .01 and the maximum step size is .20 . FIG 7 show IBM step step ( .03 ) higher. Chart 7 in the SAR is more sensitive, because there is more reversed. This is because the graph 7 ( .03 in) " step forward " above Chart 6 ( .01 ) of the " step forward " .