[R] Problem Solved: optim fails when using arima

2015-02-12 Thread Prof J C Nash (U30A)
ert Shuxiang Li > To: r-help@r-project.org > Subject: [R] Problem Solved: optim fails when using arima > Message-ID: > > Content-Type: text/plain; charset="UTF-8" > > I am using arima(x, order=c(p,0,q)) function for my project, which deals > with a set of l

[R] Problem Solved: optim fails when using arima

2015-02-11 Thread Albert Shuxiang Li
I am using arima(x, order=c(p,0,q)) function for my project, which deals with a set of large differenced time series data, data size varies from 8000 to 7. I checked their stationarity before applying arima. Occasionally, arima(x, order=c(p,0,q)) gives me error like following (which stops scrip