[R] regarding changing of title of decompose graph

Hi All, I am new to this forum. I have just started learning R. When i use plot(decompose(x)), i am getting the title Additive time series decomposition. How to make this title off and change to some other title. Any help regarding this is highly appreciated. With sincerer regards, Upananda

[R] autocorrelation problem with cointegration

Dear All, I am looking for a cointegration relationship between Spot and Future Price of commodites. The problem i am facing follows: 1. After estimating by Engle-Grranger Method, i found that the residuals are stationary at their level I (o), which is required to fulfill the cointegration test.