[R] auto.arima problem

[Actuarial_Labor]

Dear all,


     I would like to ask how my data set contains problems.
     Here is what I have done.

SandP =  read.csv("Price.csv")
library("forecast")
auto.arima(SandP)

and

R shewed this to me

Error in model.frame.default(formula = x ~ 1, drop.unused.levels = TRUE) : 
  invalid type (list) for variable 'x'


In my data set SandP
it contains 1 column of the daily index of S&P500, which is a US stock
index.


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