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

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)

Visualize

This package utilizes functionality from the package "optionstrat" and "plotly" to produce a 3D graph plotting a selected option parameter over time for a double vertical option spread. The available parameters are the option premium or an option greek such as delta, gamma, vega, theta or rho. A double vertical option spread is an option strategy composed of 4 options of the same type (calls or puts) with different strike prices, the highest and lowest strike option are typically long while the middle two are short. The double vertical spread is also known as an "Iron Condor", or an "Iron Butterfly" if the middle two options have the same strike.

visualize((type = "call", parameter = "premium", s = 100, si = 100, x1 = 90, x2 = 95, x3 = 105, x4 = 110, v1 = 0.20, v2 = v1, v3 = v1, v4 = v1, ti = 45/365, r = 0.02, d = 0, ls = 1, low = 75, high = 125, e1 =(45/365), e2 = (30/365), e3 = (15/365), e4 = (1/365), c1 = 1, c2 = 1, c3 = 1, c4 = 1))

type Character String: "call" or "put"
parameter Character String: "premium", "delta", "gamma", "vega", "theta", "rho"
s Underlying Asset Price
si Initial Price of the underlying asset
x1 Option 1 Strike
x2 Option 2 Strike
x3 Option 3 Strike
x4 Option 4 Strike
v1 Option 1 Volatility
v2 Option 2 Volatility
v3 Option 3 Volatility
v4 Option 4 Volatility
ti Initial time to maturity in years
r Annualized continuously compounded risk-free rate
d Annualized continuously compounded dividend yield
ls Numerical either 1 or -1
low Lower Limit for the price range
high Upper Limit for the price range
e1 Expiration, in years. Set to 45/365
e2 Expiration, in years. Set to 30/365
e3 Expiration, in years. Set to 15/365
e4 Expiration, in years. Set to 1/365
c1 Option 1, Number of Contracts
c2 Option 2, Number of Contracts
c3 Option 3, Number of Contracts
c4 Option 4, Number of Contracts

volskew

This function produces a 3d Plot of the volatility skew any publicly traded corporation or index. It plots the implied volatility of option contracts of five expirations, the expirations used are the contracts closest to 5, 15, 25, 35 and 45 days to expiration. Only contracts with a strike between the current spot price multiplied by the lower limit and the upper limit will be used in the plot.