The attachment did not work so I am trying it again. This time I am
naming the file problem.RData.txt (its an ascii save file).
RDA2
A
2
133889
131840
1026
1
9
3
zz2
526
1
1
1026
1
9
5
class
16
2
9
6
zooreg
9
3
zoo
254
254
__
R-devel@r-project.org mailing
I have *** attached *** an RData file containing an R object that
is acting strangely.
Try this in a fresh workspace. Do not load zoo or any other package.
We load the object, zz2, from the attached RData file. It is just
the number 1 with the class c("zooreg", "zoo").
Now create an S3 print rou
As far as I know, the reference describing the algorithm is:
A. Wächter and L. T. Biegler.
On the implementation of a primal-dual interior point filter line
search algorithm for large-scale nonlinear programming.
Mathematical Programming, 106(1):25-57, 2006.
There are more references here:
http://
Dear Paul,
No I haven't tried to use L-BFGS-B algorithm with bounds. Let me check if a
variable change can be used on my problem.
Thanks
Christophe
Le 7 juil. 2010 à 19:49, Paul Bailey a écrit :
>
> Have you considered using the optim function with L-BFGS-B for bounded
> optimization. Obviou
On Thu, Jul 8, 2010 at 12:52 AM, Paul Bailey wrote:
>
> I'm working with a large object that I want to modify slightly in a function.
> Pass-by-reference would make a lot of sense, but I don't know how to do it.
>
> I've searched this archive and thought that I can do something like
>
> f <- funct
...and for tracing memory allocations/duplications, see tracemem().
/Henrik
On Thu, Jul 8, 2010 at 9:14 AM, Henrik Bengtsson wrote:
> See packages R.oo and proto.
>
> If you wish to do it yourself, you want to utilize environments for this.
>
> /Henrik
>
> On Thu, Jul 8, 2010 at 6:52 AM, Paul Ba
See packages R.oo and proto.
If you wish to do it yourself, you want to utilize environments for this.
/Henrik
On Thu, Jul 8, 2010 at 6:52 AM, Paul Bailey wrote:
>
> I'm working with a large object that I want to modify slightly in a function.
> Pass-by-reference would make a lot of sense, but
