
Ublas : 
Subject: [ublas] generalized vector of vector
From: Isaia Nisoli (isaia.nisoli_at_[hidden])
Date: 20110829 16:44:29
I'm sorry to post this question, but I've some difficulties in understanding
the source code for generalized vector of vector.
I'm using a
typedef generalized_vector_of_vector<APFloat, row_major,
boost::numeric::ublas::vector<compressed_vector<APFloat> > >
VVMatrixND;
where APFloat is a dd_real type from the library dd.
My (stupid) question is that I would like to push_back the results of the
computation at the end of each one of the row vectors, i.e., I would like to
do something similar to
VVMatrixND B;
computation of the element (i,j), we call it mix
B[i].push_back(mix);
How do I do such a thing, I tried with append_element
B.append_element(i,j,normmix);
but I get a big blob at compile time
/usr/include/boost/numeric/ublas/vector_of_vector.hpp: In member function
â€˜void boost::numeric::ublas::generalized_vector_of_vector<T, L,
A>::append_element(boost::numeric::ublas::generalized_vector_of_vector<T,
L, A>::size_type,
boost::numeric::ublas::generalized_vector_of_vector<T, L,
A>::size_type, const T&) [with T = dd_real, L =
boost::numeric::ublas::basic_row_major<>, A =
boost::numeric::ublas::vector<boost::numeric::ublas::compressed_vector<dd_real>
>, boost::numeric::ublas::generalized_vector_of_vector<T, L,
A>::size_type = long unsigned int, const T& = const dd_real&]â€™:
srmatrix.cxx:38:38: instantiated from here
/usr/include/boost/numeric/ublas/vector_of_vector.hpp:311:50: error: â€˜class
boost::numeric::ublas::generalized_vector_of_vector<dd_real,
boost::numeric::ublas::basic_row_major<>,
boost::numeric::ublas::vector<boost::numeric::ublas::compressed_vector<dd_real>
> >::vector_data_value_typeâ€™ has no member named â€˜append_elementâ€™
/usr/include/boost/numeric/ublas/vector_of_vector.hpp:311:50: error:
returnstatement with a value, in function returning 'void'
that seems to say that gen. vector of vector has no member append_element...
Would be grateful if you could help me!
Bests
Isaia
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