Function to plot Profit & Loss of butterfly.
butterfly()Profit & Loss plot of butterfly.
Long call 1 check box: checking it plots the Profit and loss of a long call position. Long call 2 check box: checking it plots the Profit and loss of a long call position. Short two calls check box: checking it plots the Profit and loss of 2 short calls position. Profit check box: checking it plots the over all Profit and loss of a butterfly.
John C. Hull, "Options, Futures, and Other Derivatives", 8/E, Prentice Hall, 2012.