On 14/04/2021 12:11 p.m., Federico Zanghi wrote:
Hi :)
I'm here because i have a problem with my package...i have the function
"SARMAX.refinement", clearly the problem is that i can't assign a variable
on global environment from a function.
So when i CHECK the package it gives me 1 Note that doesn't make me publish
the package :(
The Note is this:
* checking R code for possible problems ... [20s] NOTE
SARMAX.refinement: no visible binding for '<<-' assignment to 'xreg'
The fact is that the function
"model <- Arima(fit$data, order = arima_order,seasonal =
list(order=seasonal_order,period=period), xreg = xreg)"
works only if i define xreg on the glob.env...
Then something is broken. You need to change things: packages shouldn't
be writing directly to the global environment.
I don't know the Arima function, but it's where I'd start looking.
I tried using fitted(fit) instead of xreg but i cannot use predict because
the function doesn't find "fitted(fit)" or xreg (even if i define xreg only
inside the function with xreg <- fitted(fit)).
Anyone has any suggestions?
(without completely change the function or the class...i'd like to
maintain the current class to use all its functions)
Scoping for modelling functions is quite tricky. The standard rules are
that model variables are looked for in the data argument first, then the
environment of the model formula. "Model variables" include those
referenced in the model formula, but also some others.
P.S.
In order to being as clear as possible i paste the code i need to use:
arimaGGM <- SARMAX.refinement(GGM,arima_order = c(2,0,1),seasonal_order =
c(1,0,0), period=4,display = F)
predict(arimaGGM,newxreg = 1:100)
the data is also attached to the mail :)
No, it wasn't. If you want more specific help, you should include a
self-contained example in the text of your message.
Duncan Murdoch
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