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Ublas : |
From: Stefan Tarrant (stefan.tarrant_at_[hidden])
Date: 2006-04-17 09:45:43
The result of this vector matrix product is a vector, not a matrix.
Neal Becker wrote:
> I'm stumped - any hints?
>
> #include <boost/numeric/ublas/vector.hpp>
> #include <boost/numeric/ublas/matrix.hpp>
>
> int main() {
> namespace ublas = boost::numeric::ublas;
>
> ublas::vector<int> a (4);
> ublas::matrix<int> b (4,4);
> ublas::matrix<int> c = ublas::prod (a, b);
> }
>
> Test.cc: In function ‘int main()’:
> Test.cc:9: error: conversion from
> ‘boost::numeric::ublas::matrix_vector_binary2<boost::numeric::ublas::vector<int,
> boost::numeric::ublas::unbounded_array<int, std::allocator<int> > >,
> boost::numeric::ublas::matrix<int,
> boost::numeric::ublas::basic_row_major<long unsigned int, long int>,
> boost::numeric::ublas::unbounded_array<int, std::allocator<int> > >,
> boost::numeric::ublas::matrix_vector_prod2<int, int, int> >’ to non-scalar
> type ‘boost::numeric::ublas::matrix<int,
> boost::numeric::ublas::basic_row_major<long unsigned int, long int>,
> boost::numeric::ublas::unbounded_array<int, std::allocator<int> > >’
> requested
>
> _______________________________________________
> ublas mailing list
> ublas_at_[hidden]
> http://lists.boost.org/mailman/listinfo.cgi/ublas
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