Simple Example: Aroon Oscillator

You need to substitute numbers (and sometimes even other formulas) for the parameters in order to create an actual formula using the template given in the table.

Tip: The name of the indicator in blue is a link to an article about that indicator which will have an expandable section called Custom PCF Formula which may include additional information about creating formulas for this indicator.

The current Aroon Oscillator 14 can be written as follows.

AROONUP14.0 - AROONDOWN14.0

The offset parameter is not essential because it is optional.

AROONUP14 - AROONDOWN14

More Complex Example: Keltner Channels

The top exponential Keltner Channel 20, 1.50 for the current bar could be written as follows (note the optional parameters are omitted).

XAVG((H + L + C) / 3 + 1.5 * ATR, 20)

While a simple upper Keltner Channel 15, 2.00 for the previous bar could be written as follows.

AVG((H1 + L1 + C1) / 3 + 2 * ATR1.1, 15)

The two examples above may seem quite different, but what they share in common is using math to transform or combine numbers and built-in indicators to create more complex indicators.

The Personal Criteria Formula Language has a number of built in mathematical operators and functions, including most of the trigonometric and hyperbolic functions.

You may be familiar with most or all of these operators and functions, but the linked tables above (in blue) list the exact syntax to use in PCFs using a format which is similar to what is used for built-in indicators and indicator templates.

The Aroon Oscillator template given above was created using the built-in indicator templates for Aroon Up and Aroon Down.

And combining them using the template for subtract or difference from the Mathematical Operators and and Functions table.

Since the Aroon Oscillator is the difference between Aroon Up and Aroon Down, Aroon Up (AROONUPx.z) was substituted for v and Aroon Down (AROONDOWNx.z) was substituted for w in the Subtract or Difference template to get AROONUPx.z - AROONDOWNx.z.