iStdDev - MQL5 Documentation

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iStdDev

The function returns the handle of the Standard Deviation indicator. It has only one buffer.

int  iStdDev(
   string              symbol,            // symbol name
   ENUM_TIMEFRAMES     period,            // period
   int                 ma_period,         // averaging period
   int                 ma_shift,          // horizontal shift
   ENUM_MA_METHOD      ma_method,         // smoothing type
   ENUM_APPLIED_PRICE  applied_price      // type of price or handle
   );

Parameters

symbol

[in] The symbol name of the security, the data of which should be used to calculate the indicator. The NULL value means the current symbol.

period

[in] The value of the period can be one of the ENUM_TIMEFRAMES values, 0 means the current timeframe.

ma_period

[in] Averaging period for the indicator calculations.

ma_shift

[in] Shift of the indicator relative to the price chart.

ma_method

[in] Type of averaging. Can be any of the ENUM_MA_METHOD values.

applied_price

[in] The price used. Can be any of the price constants ENUM_APPLIED_PRICE or a handle of another indicator.

Returned value

Returns the handle of a specified technical indicator, in case of failure returns INVALID_HANDLE. The computer memory can be freed from an indicator that is no more utilized, using the IndicatorRelease() function, to which the indicator handle is passed.

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