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This indicator identifies short-term, medium-term and long-term highs and lows of the market according to the method described by Larry Williams in the book "Long-term secrets to short-term trading".

Brief description of the principle of identifying the market highs and lows

A short-term high is a high of a bar with lower highs on either side of it, and, conversely, a short-term low of a bar is a low with higher lows on either side of it. Medium-term highs and lows are determined similarly: a medium-term high is a short-term high with lower short-term highs on either side of it, a medium-term low is a short-term low with higher short-term lows on either side of it. Long-term extremes are determined by the same principle, depending on the nearest medium-term highs and lows. Inside bars with a lower high and a lower low than that of the previous bar are not taken into account during the analysis. Thus, the short-term extremes are determined with a delay of at least one bar.

Using the indicator for technical analysis of the market

The position of an instrument's price relative to the indicator lines, as well as the position of the indicator lines relative to each other, gives an idea of the trend development, allows you to quickly find the support and resistance levels, determine the potential for the price to grow (fall) by long-term highs and lows. This indicator will be useful for creating automatic trading systems, as it allows you to quickly determine the trend direction programmatically.

Rebound of the price from a high or a low is a confirmation of a support or a resistance level presence and serves as a signal for opening deals at the next breakout or a rebound from this level. You can find additional information on entry signals in the book by Larry Williams.

The indicator does not redraw the lines once they are broken and does not reposition the medium-term and long-term highs (lows). If a short-term high (low) turns out to be higher (lower), it is possible to determine the trend based on the position of the indicator lines relative to each other. In some cases, when an outside bar is formed, the short0term low may be higher than the short-term high. This is not an error in the indicator logic, ad can serve as an entry point to a short or long position (see Figure 1). This principle is used in signals of the first type in the SRVector indicator.


  • Show short-term extremes - show the short-term levels;
  • Show medium-term extremes - show the medium-term levels;
  • Show long-term extremes - show the long-term levels;
  • Prices for building extremes - plot the levels based on high and low prices, or based on open and close prices of the bars.
trader171177 2018.07.18 17:30 

Спасибо! Индикатор интересный, важно, что не рисует

Aleksandr Tamonin
Aleksandr Tamonin 2018.07.17 20:38 

Индикатор очень хороший, только алертов не хватает. Спасибо!

Version 1.3 2018.08.14
Добавлена функция оповещений при пересечении ценой линий индикатора. Оповещения срабатывают при пересечении ценой снизу вверх текущего краткосрочного (среднесрочного, долгосрочного) максимума, или при пересечении ценой сверху вниз текущего краткосрочного (среднесрочного, долгосрочного) минимума. Дополнительными параметрами настраивается получение звуковых оповещений, оповещений "Alert" и других на выбор трейдера (оповещений в журнал экспертов, на E-mail или в мобильный терминал).