MQL4 Reference Technical Indicators iStdDevOnArray

iStdDevOnArray

Calculates the Standard Deviation indicator on data, stored in array, and returns its value.

double  iStdDevOnArray(
   double       array[],          // array with data
   int          total,            // number of elements
   int          ma_period,        // MA averaging period
   int          ma_shift,         // MA shift
   int          ma_method,        // MA averaging method
   int          shift             // shift
   );

Parameters

array[]

[in] Array with data.

total

[in] The number of items to be counted. 0 means the whole array.

ma_period

[in] Moving Average period.

ma_shift

[in] Moving Average shift.

ma_method

[in] Moving Average method. It can be any of ENUM_MA_METHOD enumeration values.

shift

[in] Index of the value taken from the indicator buffer (shift relative to the current bar the given amount of periods ago).

Returned value

Numerical value of the Standard Deviation indicator, calculated on data, stored in array[].

Note

Unlike iStdDev(...), the iStdDevOnArray() does not take data by symbol name, timeframe, the applied price. The price data must be previously prepared. The indicator is calculated from left to right. To access to the array elements as to a series array (i.e., from right to left), one has to use the ArraySetAsSeries() function.

Example:

double val=iStdDevOnArray(ExtBuffer,100,10,0,MODE_EMA,0);

iStdDeviStochastic