Price Oscillator – EFS

osc() Built-in Study Functions

The Price Oscillator displays the difference between two moving averages of a security's price. The difference between the moving averages can be expressed in either points or percentages.

Syntax

osc( nFastLength , nSlowLength , bExponential [, Series | sym() | inv() ][, nBarIndex ] )

Parameters

Parameter:	Description:	Default:
nFastLength	Required. Number for the fast period length to use for the calculation.	n/a
nSlowLength	Required. Number for the slow period length to use for the calculation.	n/a
bExponential	Required. Boolean true or false to use exponential calculations.	n/a
Series or sym() or inv()	[Optional] Series Object or function of sym() or inv() to determine symbol/interval source for the study.	Chart's sym/inv
nBarIndex	[Optional] Bar index of series to retrieve .	n/a

Return Value(s)

Returns a Series Object when nBarIndex is not specified.

Returns a single value when nBarIndex is specified.

Notes

Only available in versions 7.9 or later.

Code Examples

Single Line Indicator:

function main() {
  return new Array(osc(10, 21, false));
}

Single Line Study-on-Study Indicator:

function main() {
  return new Array(osc(10, 21, false, hl2()));
}

Retrieve single values:

function main() {
  var nValue_0 = osc(10, 21, false, 0); // Current Bar Index
  var nValue_1 = osc(10, 21, false, -1); // Prior Bar Index
  return new Array(nValue_0, nValue_1);
}

Initialize Series Objects:

//global Series Object variable
var xStudy = null;
function main() {
  if (xStudy == null) xStudy = osc(10, 21, false); // retrieve single values for conditional statements
  var nValue_0 = xStudy.getValue(0); // Current Bar Index value
  var nValue_1 = xStudy.getValue(-1); // Prior Bar Index value
  // Plot Current Bar Index Value
  return nValue_0;
}

Initialize a Series Object based on an external interval:

// global Series Object variables
var xStudy = null;
var bInit = false; // Initialization flag
function main() {
  if (bInit == false) {
    xStudy = osc(10, 21, false, inv(20)); // 20-min interval
    bInit = true;
  } // retrieve single values for conditional statements
  var nValue_0 = xStudy.getValue(0); // Current Bar Index value
  var nValue_1 = xStudy.getValue(-1); // Prior Bar Index value
  // Synchronized Series plot
  return getSeries(xStudy);
}

Initialize a Series Object based on an external symbol and interval:

// global Series Object variables
var xStudy = null;
var bInit = false; // Initialization flag
function main() {
  if (bInit == false) {
    xStudy = osc(10, 21, false, sym("IBM,20")); // IBM 20-min interval
    bInit = true;
  } // retrieve single values for conditional statements
  var nValue_0 = xStudy.getValue(0); // Current Bar Index value
  var nValue_1 = xStudy.getValue(-1); // Prior Bar Index value
  // Synchronized Series plot
  return getSeries(xStudy);
}