Displaying 3 results from an estimated 3 matches for "aleasoft".
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aesoft
2009 Mar 03
1
modifying a built in function from the stats package (fixing arima)
...,
* If I copy the code and I save it like a different function, I get the hard
error: "Error in Delta %+% c(1, -1) : object "R_TSconv" not found"
Anybody can give me a hint? I miss matlab''s easy way of doing this ("edit
function.m").
Thanks in advance
MarC (AleaSoft)
[[alternative HTML version deleted]]
2009 Mar 26
1
arima, xreg, and the armax model
...een suggested (by a reliable source) that using xreg in
arima() does NOT fit an ARMAX model [insert slap head icon here]. This will
be investigated as soon as time permits.>>
(by R.H. Shumway & D.S. Stoffer)
This is quite surprising... Does anybody know anything about it?
Marc Vinyes (AleaSoft)
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2009 Mar 03
2
modifying a built in function from the stats package (fixing arima)
Dear members of the list,
I'm a beginner in R and I'm having some trouble with: "Error in
optim(init[mask], armafn, method = "BFGS", hessian = TRUE, control =
optim.control, :
non-finite finite-difference value [8]"
when running "arima".
I've seen that some people have come accross the same problem: