[R] extracting response from arima obj

[vito muggeo]

dear all,
Is it possible to extract the response vector from a fitted arima object?
For instance in glm it is allowed, by:
obj.glm<-glm(y~x)
obj.glm$y #the response vector

In arima I can't find it:
obj.arima<-arima(y, order=c(1,0,1)) #say
names(obj.arima) doesn't seem to include the response. Am I wrong?

Many thanks for your help,
best,
vito


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