Moving Average

Moving Average

sma( length [, source | sym() | inv()] [, barIndex] )

ema( length [, source | sym() | inv()] [, barIndex] )

wma( length [, source | sym() | inv()] [, barIndex] )

vwma( length [, source | sym() | inv()] [, barIndex] )

A Moving Average is an indicator that shows the average value of a security's price over a period of time. When calculating a moving average, a mathematical analysis of the security's average value over a predetermined time period is made. As the security's price changes, its average price moves up or down.

Parameters

To Create a Series

var myStudy1 = null;

var myStudy2 = null;

var myStudy3 = null;

var bInit = false;

function main() {

var myVar1;

var myVar2;

var myVar3;

       if ( bInit == false ) {

               myStudy1 = ema( 20 );

               myStudy2 = sma( 10 );

               myStudy3 = wma( 40 );

               bInit = true;

       }

       //retrieve the current values

       myVar1 = myStudy1.getValue(0);

       myVar2 = myStudy2.getValue(0);

       myVar3 = myStudy3.getValue(0);

       return new Array( myVar1, myVar2, myVar3 );

}

To Retrieve a Single Value

function main() {

       ...

       ...

       myVar = sma( 10 );

       //do something with the value in myVar

}

Calling Examples

       //create a study that uses IBM as the symbol along with whatever bar

       //interval you are using in the chart where the script is loaded

       myStudy = sma( 20, sym( "IBM") );

       //create a study that uses the 15-min bar interval, regardless of the bar 

       //interval of the chart in which the script is loaded

       myStudy = ema( 10, inv(15) );

       //create a study that uses the Daily bar interval, regardless of the bar 

       //interval of the chart in which the script is loaded

       myStudy = wma( 5, inv("D") );

       //create a study that will be based on MSFT 30-min bars, regardless of

       //the symbol/bar interval of the chart in which the script is loaded

       myStudy = vwma( 14, sym( "MSFT,30" ) );

       //create a study that will be based on the high.

       myStudy = ema( 15, high() );

       //create a study that will be based on the close, using 15-min bars, regardless of 

       //the bar interval of the chart in which the script is loaded

       myStudy = sma( 20, close( inv(15) ) );

offsetSeries()