[R] Multivariate OLS

[r400 r400]

Dear all R users,

Suppose I have a VECTOR of time series y[t] consists of 2000 data point. For example suppose I have data frame which has two columns. First column represents a time series of exchange rate for 2000 days. And the second column represents the price of a commodity for the same period. Now I want to fit a OLS regression like that,

y[t] = a + b*delta[y[t-1]] + c*delta[y[t-2]] + epsilon[t]

as y[t] is not a vector rather a data frame containing two columns I could not use lm() function. Can anyone give me any idea how to do that in R?

Thanks and regards,
jon

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