title: Using stockPortfolio without Yahoo Finance
body: <p>I am very new to R and i want to use the stockPortfolio package to model stocks( SIM, CC, MGM). Since Yahoo finance is not available for FTSE100 data (its been disabled), i have my data as a *.csv file.
  How do i use stockPortfolio library with my data without getting error like
  "Error in stockModel(data, drop = 31) : 
    The "stockReturns" variable is not recognized."
  Thank you.</p>