Le 14/06/2017 à 16:06, Serguei Sokol a écrit :
Le 14/06/2017 à 15:21, Douglas Bates a écrit :
...
That is the format of the dgTMatrix class from the Matrix package for R but not, as far as I can tell, in Armadillo. A brief glance at the Armadillo
documentation indicates that sparse matrices are always in the compressed sparse column (CSC) format.
Indeed, but nothing prevents Binxiang to develop a wrap() that will convert
armadillo format to one or many of R formats, right?
I realize that I was asking too much to wrap(). After having a glance on
http://gallery.rcpp.org/articles/custom-templated-wrap-and-as-for-seamingless-interfaces/
I understand that it cannot convert a given object to more than one R format.
There is no mechanism equivalent to T as in as<T>().
Given this, I agree that the most logical solution would be to stay with
CSC format which is common to Armadillo and Matrix package.
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