volskew: Volatility Skew Visualization
In visualR: 3D Visualization of Option Greeks and Volatility Skew

Creates a 3D Plot of the Volatility Skew

1
2
3

volskew(symbol, type = "call", spot = "current", r = 0.02,
  ll = 0.9, ul = 1.1, days_out = 50, d1 = 0, d2 = 0, d3 = 0,
  d4 = 0, d5 = 0)

`symbol`	Ticker symbol for a publicly traded company
`type`	"call" or "put" option volatility skew
`spot`	This is the current price of the stock, if blank it defaults to the previous adjusted close
`r`	risk-free rate, annualized and continuously-compounded
`ll`	lower limit, set to 0.90
`ul`	upper limit, set to 1.10
`days_out`	keep at 50
`d1`	dividend yield
`d2`	dividend yield
`d3`	dividend yield
`d4`	dividend yield
`d5`	dividend yield