WILLIAMSR(close; high; low; period)

The first three arguments are arrays: 'close' contains the close values, 'high' contains the high values and 'low' contains the low values.
The 'period' parameter defines the period for the function and must be a constant greater or equal to 1.

The result is an array. The first 'period' elements of the result are marked as invalid.

William's %R is a momentum indicator, designed to measure overbought and oversold levels. This indicator is similar to the Stochastic %K indicator, except that Williams %R is plotted using negative values ranging from 0 to -100. This indicator was developed by Larry Williams.

Windows Forms: All Examples\Data Manipulation\Functions\Financial\Technical Price Indicators