On 4 February 2014 at 11:09, Yixuan Qiu wrote:
| Sure. What are you planning to do with ARPACK? It seems that the newest
version
| of Armadillo already supports eigs_sym() and eigs_gen() to retrieve a limited
| number of eigenvalues.
Recall that we link with (post Rcpp 0.11.0)
PKG_LIBS=
Sure. What are you planning to do with ARPACK? It seems that the newest
version of Armadillo already supports eigs_sym() and eigs_gen() to retrieve
a limited number of eigenvalues.
Best,
Yixuan
2014-02-03 Dirk Eddelbuettel :
>
> On 3 February 2014 at 18:09, Yixuan Qiu wrote:
> | A pretty nice
On 4 February 2014 at 09:30, Søren Højsgaard wrote:
| Just to clarify this (for myself):
|
| In a broader perspective, isn't it so now that there is very limited need for
as< >(some_SEXP)?
|
| When calling from R we can declare input to be NumericMatrices,
NumericVectors ets, but we can also
[mailto:e...@debian.org]
Sent: 3. februar 2014 20:20
To: Douglas Bates
Cc: Dirk Eddelbuettel; French, Joshua; Søren Højsgaard;
rcpp-devel@lists.r-forge.r-project.org
Subject: Re: [Rcpp-devel] Sparse matrix operations
On 3 February 2014 at 12:59, Douglas Bates wrote:
| On Mon, Feb 3, 2014 at 11:4
On 3 February 2014 at 18:09, Yixuan Qiu wrote:
| A pretty nice feature of Eigen is that it allows you to map an existing memory
| address to an Eigen object, so the data stored in R can be directly reused by
| Eigen. This may be the key point if we want to avoid copying data from R to
| Eigen/Arma
A pretty nice feature of Eigen is that it allows you to map an existing
memory address to an Eigen object, so the data stored in R can be directly
reused by Eigen. This may be the key point if we want to avoid copying data
from R to Eigen/Armadillo. Dirk, does Armadillo has such kind of
constructor
On 3 February 2014 at 12:59, Douglas Bates wrote:
| On Mon, Feb 3, 2014 at 11:48 AM, Dirk Eddelbuettel wrote:
|
|
| On 3 February 2014 at 10:23, French, Joshua wrote:
| | Soren and Doug,
| |
| | Thanks for the info about the sparse matrices. I'll give it a go and
| seen wha
On Mon, Feb 3, 2014 at 11:48 AM, Dirk Eddelbuettel wrote:
>
> On 3 February 2014 at 10:23, French, Joshua wrote:
> | Soren and Doug,
> |
> | Thanks for the info about the sparse matrices. I'll give it a go and
> seen what
> | happens. If it works out, then perhaps I'll be able to provide a nice
On 3 February 2014 at 10:23, French, Joshua wrote:
| Soren and Doug,
|
| Thanks for the info about the sparse matrices. I'll give it a go and seen
what
| happens. If it works out, then perhaps I'll be able to provide a nice
| RcppGallery example.
Yes -- there isn't much yet in RcppArmadillo b
t;>, Joshua
French mailto:joshua.fre...@ucdenver.edu>>
Cc:
"rcpp-devel@lists.r-forge.r-project.org<mailto:rcpp-devel@lists.r-forge.r-project.org>"
mailto:rcpp-de...@r-forge.wu-wien.ac.at>>
Subject: RE: [Rcpp-devel] Sparse matrix operations
I’ll just add that I have used the sparse
sts.r-forge.r-project.org] On Behalf Of Douglas
Bates
Sent: 31. januar 2014 21:45
To: French, Joshua
Cc: rcpp-devel@lists.r-forge.r-project.org
Subject: Re: [Rcpp-devel] Sparse matrix operations
On Fri, Jan 31, 2014 at 1:14 PM, French, Joshua
mailto:joshua.fre...@ucdenver.edu>> wrote:
Hello
On Fri, Jan 31, 2014 at 1:14 PM, French, Joshua
wrote:
> Hello everyone,
>
> For those of you who have used the sparse matrix capabilities of
> Armadillo/RcppArmadillo, how seamless are the operations in moving between
> sparse and dense matrices? I know there are some tricks for getting
> sparse
Hello everyone,
For those of you who have used the sparse matrix capabilities of
Armadillo/RcppArmadillo, how seamless are the operations in moving between
sparse and dense matrices? I know there are some tricks for getting
sparseMatrix objects into SpMat objects (Dirk has a nice Rcpp Gallery
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