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I suppose the naive implementation of a + operator for matrices (2D for instance)
in C++ would be:
class Matrix {
Matrix operator+ (Matrix other) const {
Matrix result;
// fill result with *this.data plus other.data
return result;
}
}
so we could use it like
Matrix a;
Matrix…
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What is the best way to scatter a Fortran 90 matrix by its rows rather than columns? That is, let's say I have a matrix a(4,50) and I want to MPI_SCATTER it onto two processes where each part is alocal(2,50), where rank 0 has rows 1 and 2, and rank 1 has 3 and 4. Now, in C, this is simple since arrays…
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I'm working on a project, written in Java, which requires that I build a very large 2-D sparse array. Very sparse, if that makes a difference. Anyway: the most crucial aspect for this application is efficency in terms of time (assume loads of memory, though not nearly so unlimited as to allow me…
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How can I define a array of boost matrices as a member variable?
None of the following worked.
boost::numeric::ublas::matrix arrayM(1, 3)[arraySize];
boost::numeric::ublas::matrix(1, 3) arrayM[arraySize];
boost::numeric::ublas::matrix arrayM[arraySize](1, 3);
Thanks,
Ravi.
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I'm starting to learn about 3D rendering and I've been making good progress. I've picked up a lot regarding matrices and the general operations that can be performed on them.
One thing I'm still not quite following is OpenGL's use of matrices. I see this (and things like it) quite a lot:
x y z…
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