Hi Charles, > Okay, I thought that would be a workaround. Does the current `resize` > method create a copy of the matrix internally as well? Ideally one > could resize without the copying overhead.
The resize() method allocates a new buffer and copies over the old entries. Pretty much the same as in the workaround solution I suggested. > Also, would you consider this as new functionality to be added in the > future? If so I can create a new github issue but if not, this > workaround should be sufficient unless there is a way to avoid the > aforementioned copy overhead. Do you happen to have a suggestion for an intuitive interface? I can't think of a good one, so I'd rather leave it as-is with the explicit copying as suggested. Best regards, Karli > On Wed, Jan 20, 2016 at 11:08 AM, Karl Rupp <r...@iue.tuwien.ac.at > <mailto:r...@iue.tuwien.ac.at>> wrote: > > Hi Charles, > > > I can easily resize a matrix with the `resize` function > > > viennacl::matrix vcl_A(3,3); > vcl_A.resize(3,4); > > but I notice that this adds the new column on the end of the > matrix. Is > there a way to append it on to the front of the matrix? > > > Not directly. But you can create a new matrix and then use > viennacl::project() to place the old entries at the correct spot: > > matrix<T> B(3,4); > matrix_range<matrix<T> > B_right(B, range(0, 3), range(1,4)); > B_right = A; > > > > Best regards, > Karli > > ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ ViennaCL-devel mailing list ViennaCL-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/viennacl-devel
