[Rcpp-devel] Using sparse matrices from the Matrix package in Rcpp

Andreas Alfons andreas.alfons at kuleuven.be
Tue Jun 26 01:27:58 CEST 2012

> To me it seems that I can not acces entries (i,j) using A(i,j) when A is a sparse matrix. Is that so? - and if yes, any suggestions on what I can do alternatively?

Take a look at the coeff() method, e.g., A.coeff(i,j)

See also its documentation:

- Andreas

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