Thanks a lot to everybody that helped me out with this.
Conclusions:
(1)
In order to edit arima in R:
fix(arima)
or alternatively:
arima-edit(arima)
(2)
This is not contained in the Introduction to R manual.
(3)
A productive fix of arima is attached (arma coefficients printed out and
error
If you ***look at the code*** for arima you will see that ``%+%'' is
defined
in terms of a call to ``.Call()'' which calls ``R_TSconv''. So
apparently
R_TSconv is a C or Fortran function or subroutine in a ``shared
object library''
or dll upon which arima depends. Hence to do anything with it
On Thu, Mar 5, 2009 at 10:00 AM, Marc Vinyes mvin...@aleasoft.com wrote:
If you ***look at the code*** for arima you will see that ``%+%'' is
defined
in terms of a call to ``.Call()'' which calls ``R_TSconv''. So
apparently
R_TSconv is a C or Fortran function or subroutine in a ``shared
object
Just a quick note on your original question:
if you use edit(arima), you have to remember that it returns the
modified function, which then must be stored.
I.e, use
arima-edit(arima)
instead of just
edit(arima)
,and changes should be stored.
THIS IS IT.
IMHO, this should be written in BOLD
On 5/03/2009, at 10:00 PM, Marc Vinyes wrote:
It is quite exagerated that I have to build R in order to modify an
R file
without messing with dlls, and I think it would be interesting to
make this
process easier, but for now I'm happy to be productive again.
There is probably (almost
Hi Marc,
There is in fact an even shorter route: ?fix
Regards, Mark.
Rolf Turner-3 wrote:
On 5/03/2009, at 10:00 PM, Marc Vinyes wrote:
It is quite exagerated that I have to build R in order to modify an
R file
without messing with dlls, and I think it would be interesting to
Dear Carlos and Kjetil,
Thanks for your answer.
I do not think that is the way to go. If you believe that your algorithm
is better than the existing one, talk to the author of the package and
discuss the improvement. The whole community will benefit.
I should be able to *easily* modify it and
On 4/03/2009, at 10:06 PM, Marc Vinyes wrote:
Dear Carlos and Kjetil,
Thanks for your answer.
I do not think that is the way to go. If you believe that your
algorithm
is better than the existing one, talk to the author of the package
and
discuss the improvement. The whole community will
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
Hello,
I do not think that is the way to go. If you believe that your algorithm
is better than the existing one, talk to the author of the package and
discuss the improvement. The whole community will benefit.
If you want to tune the existing function and tailor it to your needs,
you have
adding to the points above:
3) after downloading the source package (stats) containung arima,
rename it (my.arima) and then do the changes.
Kjetil
On Tue, Mar 3, 2009 at 5:29 PM, Carlos J. Gil Bellosta c...@datanalytics.com
wrote:
Hello,
I do not think that is the way to go. If you
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